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Finding the Fourth Proportional to 145,170.80, 217,793.28 and 70,326.80

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Solution

The fourth proportional to 145,170.80, 217,793.28 and 70,326.80 is: 105,508.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,170.80 : 217,793.28 = 70,326.80 : x
  2. Step 2: Convert to fraction form
    145,170.80/217,793.28 = 70,326.80/x
  3. Step 3: Cross multiply
    145,170.80x = 217,793.28 × 70,326.80
  4. Step 4: Simplify right side
    145,170.80x = 15,316,704,443.90
  5. Step 5: Solve for x
    x = 15,316,704,443.90/145,170.80
  6. Step 6: Final answer
    x = 105,508.16

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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.