Home / 153,966.08-212,426.78-89,422.88

Finding the Fourth Proportional to 153,966.08, 212,426.78 and 89,422.88

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Solution

The fourth proportional to 153,966.08, 212,426.78 and 89,422.88 is: 123,376.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,966.08 : 212,426.78 = 89,422.88 : x
  2. Step 2: Convert to fraction form
    153,966.08/212,426.78 = 89,422.88/x
  3. Step 3: Cross multiply
    153,966.08x = 212,426.78 × 89,422.88
  4. Step 4: Simplify right side
    153,966.08x = 18,995,814,456.73
  5. Step 5: Solve for x
    x = 18,995,814,456.73/153,966.08
  6. Step 6: Final answer
    x = 123,376.62

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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.