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Finding the Fourth Proportional to 163,011.38, 224,695.88 and 128,499.87

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Solution

The fourth proportional to 163,011.38, 224,695.88 and 128,499.87 is: 177,125.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,011.38 : 224,695.88 = 128,499.87 : x
  2. Step 2: Convert to fraction form
    163,011.38/224,695.88 = 128,499.87/x
  3. Step 3: Cross multiply
    163,011.38x = 224,695.88 × 128,499.87
  4. Step 4: Simplify right side
    163,011.38x = 28,873,390,727.04
  5. Step 5: Solve for x
    x = 28,873,390,727.04/163,011.38
  6. Step 6: Final answer
    x = 177,125.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.