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Finding the Fourth Proportional to 99,392.16, 137,159.74 and 54,070.53

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Solution

The fourth proportional to 99,392.16, 137,159.74 and 54,070.53 is: 74,616.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,392.16 : 137,159.74 = 54,070.53 : x
  2. Step 2: Convert to fraction form
    99,392.16/137,159.74 = 54,070.53/x
  3. Step 3: Cross multiply
    99,392.16x = 137,159.74 × 54,070.53
  4. Step 4: Simplify right side
    99,392.16x = 7,416,299,701.29
  5. Step 5: Solve for x
    x = 7,416,299,701.29/99,392.16
  6. Step 6: Final answer
    x = 74,616.55

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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.