Home / 123,860,007.20-185,931,728.40-72,770,812.40

Finding the Fourth Proportional to 123,860,007.20, 185,931,728.40 and 72,770,812.40

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Solution

The fourth proportional to 123,860,007.20, 185,931,728.40 and 72,770,812.40 is: 109,239,481.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,860,007.20 : 185,931,728.40 = 72,770,812.40 : x
  2. Step 2: Convert to fraction form
    123,860,007.20/185,931,728.40 = 72,770,812.40/x
  3. Step 3: Cross multiply
    123,860,007.20x = 185,931,728.40 × 72,770,812.40
  4. Step 4: Simplify right side
    123,860,007.20x = 13,530,402,926,604,154
  5. Step 5: Solve for x
    x = 13,530,402,926,604,154/123,860,007.20
  6. Step 6: Final answer
    x = 109,239,481.19

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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.