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Finding the Fourth Proportional to 103,214.88, 142,480.08 and 69,726.24

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Solution

The fourth proportional to 103,214.88, 142,480.08 and 69,726.24 is: 96,251.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,214.88 : 142,480.08 = 69,726.24 : x
  2. Step 2: Convert to fraction form
    103,214.88/142,480.08 = 69,726.24/x
  3. Step 3: Cross multiply
    103,214.88x = 142,480.08 × 69,726.24
  4. Step 4: Simplify right side
    103,214.88x = 9,934,600,253.30
  5. Step 5: Solve for x
    x = 9,934,600,253.30/103,214.88
  6. Step 6: Final answer
    x = 96,251.63

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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.