Home / 155,964.29-215,237.25-87,983.82

Finding the Fourth Proportional to 155,964.29, 215,237.25 and 87,983.82

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Solution

The fourth proportional to 155,964.29, 215,237.25 and 87,983.82 is: 121,421.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,964.29 : 215,237.25 = 87,983.82 : x
  2. Step 2: Convert to fraction form
    155,964.29/215,237.25 = 87,983.82/x
  3. Step 3: Cross multiply
    155,964.29x = 215,237.25 × 87,983.82
  4. Step 4: Simplify right side
    155,964.29x = 18,937,395,461.30
  5. Step 5: Solve for x
    x = 18,937,395,461.30/155,964.29
  6. Step 6: Final answer
    x = 121,421.36

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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.