Home / 191,485,417.80-287,144,145.90-76,431,721.80

Finding the Fourth Proportional to 191,485,417.80, 287,144,145.90 and 76,431,721.80

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Solution

The fourth proportional to 191,485,417.80, 287,144,145.90 and 76,431,721.80 is: 114,614,061.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,485,417.80 : 287,144,145.90 = 76,431,721.80 : x
  2. Step 2: Convert to fraction form
    191,485,417.80/287,144,145.90 = 76,431,721.80/x
  3. Step 3: Cross multiply
    191,485,417.80x = 287,144,145.90 × 76,431,721.80
  4. Step 4: Simplify right side
    191,485,417.80x = 21,946,921,475,927,408
  5. Step 5: Solve for x
    x = 21,946,921,475,927,408/191,485,417.80
  6. Step 6: Final answer
    x = 114,614,061.62

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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.