Home / 129,589,250-178,836,897.48-71,646,230.48

Finding the Fourth Proportional to 129,589,250, 178,836,897.48 and 71,646,230.48

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Solution

The fourth proportional to 129,589,250, 178,836,897.48 and 71,646,230.48 is: 98,873,861.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,589,250 : 178,836,897.48 = 71,646,230.48 : x
  2. Step 2: Convert to fraction form
    129,589,250/178,836,897.48 = 71,646,230.48/x
  3. Step 3: Cross multiply
    129,589,250x = 178,836,897.48 × 71,646,230.48
  4. Step 4: Simplify right side
    129,589,250x = 12,812,989,575,180,212
  5. Step 5: Solve for x
    x = 12,812,989,575,180,212/129,589,250
  6. Step 6: Final answer
    x = 98,873,861.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.