Home / 143,963.10-215,944.65-86,882.40

Finding the Fourth Proportional to 143,963.10, 215,944.65 and 86,882.40

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Solution

The fourth proportional to 143,963.10, 215,944.65 and 86,882.40 is: 130,323.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,963.10 : 215,944.65 = 86,882.40 : x
  2. Step 2: Convert to fraction form
    143,963.10/215,944.65 = 86,882.40/x
  3. Step 3: Cross multiply
    143,963.10x = 215,944.65 × 86,882.40
  4. Step 4: Simplify right side
    143,963.10x = 18,761,789,459.16
  5. Step 5: Solve for x
    x = 18,761,789,459.16/143,963.10
  6. Step 6: Final answer
    x = 130,323.60

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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.