Home / 99,661,842.90-149,209,329.15-76,798,070.10

Finding the Fourth Proportional to 99,661,842.90, 149,209,329.15 and 76,798,070.10

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Solution

The fourth proportional to 99,661,842.90, 149,209,329.15 and 76,798,070.10 is: 114,978,693.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,661,842.90 : 149,209,329.15 = 76,798,070.10 : x
  2. Step 2: Convert to fraction form
    99,661,842.90/149,209,329.15 = 76,798,070.10/x
  3. Step 3: Cross multiply
    99,661,842.90x = 149,209,329.15 × 76,798,070.10
  4. Step 4: Simplify right side
    99,661,842.90x = 11,458,988,519,635,672
  5. Step 5: Solve for x
    x = 11,458,988,519,635,672/99,661,842.90
  6. Step 6: Final answer
    x = 114,978,693.81

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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.