Home / 206,009,287,687.30-309,049,136,456.78-84,931,655,574.42

Finding the Fourth Proportional to 206,009,287,687.30, 309,049,136,456.78 and 84,931,655,574.42

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Solution

The fourth proportional to 206,009,287,687.30, 309,049,136,456.78 and 84,931,655,574.42 is: 127,411,997,331.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,009,287,687.30 : 309,049,136,456.78 = 84,931,655,574.42 : x
  2. Step 2: Convert to fraction form
    206,009,287,687.30/309,049,136,456.78 = 84,931,655,574.42/x
  3. Step 3: Cross multiply
    206,009,287,687.30x = 309,049,136,456.78 × 84,931,655,574.42
  4. Step 4: Simplify right side
    206,009,287,687.30x = 26,248,054,813,119,169,429,504
  5. Step 5: Solve for x
    x = 26,248,054,813,119,169,429,504/206,009,287,687.30
  6. Step 6: Final answer
    x = 127,411,997,331.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.