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Finding the Fourth Proportional to 125,573.20, 188,359.80 and 72,429.10

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Solution

The fourth proportional to 125,573.20, 188,359.80 and 72,429.10 is: 108,643.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,573.20 : 188,359.80 = 72,429.10 : x
  2. Step 2: Convert to fraction form
    125,573.20/188,359.80 = 72,429.10/x
  3. Step 3: Cross multiply
    125,573.20x = 188,359.80 × 72,429.10
  4. Step 4: Simplify right side
    125,573.20x = 13,642,730,790.18
  5. Step 5: Solve for x
    x = 13,642,730,790.18/125,573.20
  6. Step 6: Final answer
    x = 108,643.65

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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.