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Finding the Fourth Proportional to 185,071.66, 255,394.17 and 103,400.53

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Solution

The fourth proportional to 185,071.66, 255,394.17 and 103,400.53 is: 142,690.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,071.66 : 255,394.17 = 103,400.53 : x
  2. Step 2: Convert to fraction form
    185,071.66/255,394.17 = 103,400.53/x
  3. Step 3: Cross multiply
    185,071.66x = 255,394.17 × 103,400.53
  4. Step 4: Simplify right side
    185,071.66x = 26,407,891,898.42
  5. Step 5: Solve for x
    x = 26,407,891,898.42/185,071.66
  6. Step 6: Final answer
    x = 142,690.09

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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.