Home / 99,841,142.20-137,778,132.98-55,788,503

Finding the Fourth Proportional to 99,841,142.20, 137,778,132.98 and 55,788,503

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Solution

The fourth proportional to 99,841,142.20, 137,778,132.98 and 55,788,503 is: 76,986,657.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,841,142.20 : 137,778,132.98 = 55,788,503 : x
  2. Step 2: Convert to fraction form
    99,841,142.20/137,778,132.98 = 55,788,503/x
  3. Step 3: Cross multiply
    99,841,142.20x = 137,778,132.98 × 55,788,503
  4. Step 4: Simplify right side
    99,841,142.20x = 7,686,435,785,089,128
  5. Step 5: Solve for x
    x = 7,686,435,785,089,128/99,841,142.20
  6. Step 6: Final answer
    x = 76,986,657.16

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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.