Home / 139,472,001.20-209,208,001.80-79,005,825.20

Finding the Fourth Proportional to 139,472,001.20, 209,208,001.80 and 79,005,825.20

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Solution

The fourth proportional to 139,472,001.20, 209,208,001.80 and 79,005,825.20 is: 118,508,737.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,472,001.20 : 209,208,001.80 = 79,005,825.20 : x
  2. Step 2: Convert to fraction form
    139,472,001.20/209,208,001.80 = 79,005,825.20/x
  3. Step 3: Cross multiply
    139,472,001.20x = 209,208,001.80 × 79,005,825.20
  4. Step 4: Simplify right side
    139,472,001.20x = 16,528,650,820,652,086
  5. Step 5: Solve for x
    x = 16,528,650,820,652,086/139,472,001.20
  6. Step 6: Final answer
    x = 118,508,737.80

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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.