Home / 161,691.28-223,140.87-90,071.35

Finding the Fourth Proportional to 161,691.28, 223,140.87 and 90,071.35

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Solution

The fourth proportional to 161,691.28, 223,140.87 and 90,071.35 is: 124,302.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,691.28 : 223,140.87 = 90,071.35 : x
  2. Step 2: Convert to fraction form
    161,691.28/223,140.87 = 90,071.35/x
  3. Step 3: Cross multiply
    161,691.28x = 223,140.87 × 90,071.35
  4. Step 4: Simplify right side
    161,691.28x = 20,098,599,401.07
  5. Step 5: Solve for x
    x = 20,098,599,401.07/161,691.28
  6. Step 6: Final answer
    x = 124,302.31

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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.