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Finding the Fourth Proportional to 142,356.15, 213,468.48 and 42,490.44

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Solution

The fourth proportional to 142,356.15, 213,468.48 and 42,490.44 is: 63,716.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,356.15 : 213,468.48 = 42,490.44 : x
  2. Step 2: Convert to fraction form
    142,356.15/213,468.48 = 42,490.44/x
  3. Step 3: Cross multiply
    142,356.15x = 213,468.48 × 42,490.44
  4. Step 4: Simplify right side
    142,356.15x = 9,070,369,641.33
  5. Step 5: Solve for x
    x = 9,070,369,641.33/142,356.15
  6. Step 6: Final answer
    x = 63,716.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.