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Finding the Fourth Proportional to 162,079.30, 243,337.65 and 128,836.90

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Solution

The fourth proportional to 162,079.30, 243,337.65 and 128,836.90 is: 193,429.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,079.30 : 243,337.65 = 128,836.90 : x
  2. Step 2: Convert to fraction form
    162,079.30/243,337.65 = 128,836.90/x
  3. Step 3: Cross multiply
    162,079.30x = 243,337.65 × 128,836.90
  4. Step 4: Simplify right side
    162,079.30x = 31,350,868,479.29
  5. Step 5: Solve for x
    x = 31,350,868,479.29/162,079.30
  6. Step 6: Final answer
    x = 193,429.19

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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.