Home / 145,690,666.40-218,535,999.60-73,131,255.20

Finding the Fourth Proportional to 145,690,666.40, 218,535,999.60 and 73,131,255.20

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Solution

The fourth proportional to 145,690,666.40, 218,535,999.60 and 73,131,255.20 is: 109,696,882.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,690,666.40 : 218,535,999.60 = 73,131,255.20 : x
  2. Step 2: Convert to fraction form
    145,690,666.40/218,535,999.60 = 73,131,255.20/x
  3. Step 3: Cross multiply
    145,690,666.40x = 218,535,999.60 × 73,131,255.20
  4. Step 4: Simplify right side
    145,690,666.40x = 15,981,811,957,134,698
  5. Step 5: Solve for x
    x = 15,981,811,957,134,698/145,690,666.40
  6. Step 6: Final answer
    x = 109,696,882.80

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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.