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Finding the Fourth Proportional to 187,032.40, 280,448.88 and 81,728.08

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Solution

The fourth proportional to 187,032.40, 280,448.88 and 81,728.08 is: 122,548.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,032.40 : 280,448.88 = 81,728.08 : x
  2. Step 2: Convert to fraction form
    187,032.40/280,448.88 = 81,728.08/x
  3. Step 3: Cross multiply
    187,032.40x = 280,448.88 × 81,728.08
  4. Step 4: Simplify right side
    187,032.40x = 22,920,548,500.55
  5. Step 5: Solve for x
    x = 22,920,548,500.55/187,032.40
  6. Step 6: Final answer
    x = 122,548.55

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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.