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Finding the Fourth Proportional to 99,889.17, 137,851.25 and 57,447.74

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Solution

The fourth proportional to 99,889.17, 137,851.25 and 57,447.74 is: 79,280.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,889.17 : 137,851.25 = 57,447.74 : x
  2. Step 2: Convert to fraction form
    99,889.17/137,851.25 = 57,447.74/x
  3. Step 3: Cross multiply
    99,889.17x = 137,851.25 × 57,447.74
  4. Step 4: Simplify right side
    99,889.17x = 7,919,241,792.18
  5. Step 5: Solve for x
    x = 7,919,241,792.18/99,889.17
  6. Step 6: Final answer
    x = 79,280.28

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1.5x scale

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.