Home / 142,221.06-213,167.34-53,417.88

Finding the Fourth Proportional to 142,221.06, 213,167.34 and 53,417.88

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Solution

The fourth proportional to 142,221.06, 213,167.34 and 53,417.88 is: 80,065.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,221.06 : 213,167.34 = 53,417.88 : x
  2. Step 2: Convert to fraction form
    142,221.06/213,167.34 = 53,417.88/x
  3. Step 3: Cross multiply
    142,221.06x = 213,167.34 × 53,417.88
  4. Step 4: Simplify right side
    142,221.06x = 11,386,947,388.04
  5. Step 5: Solve for x
    x = 11,386,947,388.04/142,221.06
  6. Step 6: Final answer
    x = 80,065.13

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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.