Home / 145,514,892.30-218,272,338.45-72,742,904.70

Finding the Fourth Proportional to 145,514,892.30, 218,272,338.45 and 72,742,904.70

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Solution

The fourth proportional to 145,514,892.30, 218,272,338.45 and 72,742,904.70 is: 109,114,357.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,514,892.30 : 218,272,338.45 = 72,742,904.70 : x
  2. Step 2: Convert to fraction form
    145,514,892.30/218,272,338.45 = 72,742,904.70/x
  3. Step 3: Cross multiply
    145,514,892.30x = 218,272,338.45 × 72,742,904.70
  4. Step 4: Simplify right side
    145,514,892.30x = 15,877,763,914,514,496
  5. Step 5: Solve for x
    x = 15,877,763,914,514,496/145,514,892.30
  6. Step 6: Final answer
    x = 109,114,357.05

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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.