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Finding the Fourth Proportional to 147,507.12, 220,983.12 and 87,357.60

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Solution

The fourth proportional to 147,507.12, 220,983.12 and 87,357.60 is: 130,872.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,507.12 : 220,983.12 = 87,357.60 : x
  2. Step 2: Convert to fraction form
    147,507.12/220,983.12 = 87,357.60/x
  3. Step 3: Cross multiply
    147,507.12x = 220,983.12 × 87,357.60
  4. Step 4: Simplify right side
    147,507.12x = 19,304,555,003.71
  5. Step 5: Solve for x
    x = 19,304,555,003.71/147,507.12
  6. Step 6: Final answer
    x = 130,872.02

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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.