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Finding the Fourth Proportional to 124,827.80, 187,241.70 and 72,339.80

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Solution

The fourth proportional to 124,827.80, 187,241.70 and 72,339.80 is: 108,509.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,827.80 : 187,241.70 = 72,339.80 : x
  2. Step 2: Convert to fraction form
    124,827.80/187,241.70 = 72,339.80/x
  3. Step 3: Cross multiply
    124,827.80x = 187,241.70 × 72,339.80
  4. Step 4: Simplify right side
    124,827.80x = 13,545,027,129.66
  5. Step 5: Solve for x
    x = 13,545,027,129.66/124,827.80
  6. Step 6: Final answer
    x = 108,509.70

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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.