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Finding the Fourth Proportional to 157,393.30, 217,205.13 and 85,773.10

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Solution

The fourth proportional to 157,393.30, 217,205.13 and 85,773.10 is: 118,368.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,393.30 : 217,205.13 = 85,773.10 : x
  2. Step 2: Convert to fraction form
    157,393.30/217,205.13 = 85,773.10/x
  3. Step 3: Cross multiply
    157,393.30x = 217,205.13 × 85,773.10
  4. Step 4: Simplify right side
    157,393.30x = 18,630,357,336.00
  5. Step 5: Solve for x
    x = 18,630,357,336.00/157,393.30
  6. Step 6: Final answer
    x = 118,368.17

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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.