Home / 98,755,129.92-148,078,693.80-78,415,505.04

Finding the Fourth Proportional to 98,755,129.92, 148,078,693.80 and 78,415,505.04

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Solution

The fourth proportional to 98,755,129.92, 148,078,693.80 and 78,415,505.04 is: 117,580,378.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,755,129.92 : 148,078,693.80 = 78,415,505.04 : x
  2. Step 2: Convert to fraction form
    98,755,129.92/148,078,693.80 = 78,415,505.04/x
  3. Step 3: Cross multiply
    98,755,129.92x = 148,078,693.80 × 78,415,505.04
  4. Step 4: Simplify right side
    98,755,129.92x = 11,611,665,559,990,518
  5. Step 5: Solve for x
    x = 11,611,665,559,990,518/98,755,129.92
  6. Step 6: Final answer
    x = 117,580,378.55

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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.