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Finding the Fourth Proportional to 156,031.60, 234,128.40 and 72,925.60

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Solution

The fourth proportional to 156,031.60, 234,128.40 and 72,925.60 is: 109,426.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,031.60 : 234,128.40 = 72,925.60 : x
  2. Step 2: Convert to fraction form
    156,031.60/234,128.40 = 72,925.60/x
  3. Step 3: Cross multiply
    156,031.60x = 234,128.40 × 72,925.60
  4. Step 4: Simplify right side
    156,031.60x = 17,073,954,047.04
  5. Step 5: Solve for x
    x = 17,073,954,047.04/156,031.60
  6. Step 6: Final answer
    x = 109,426.26

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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.