Home / 113,603.40-156,769.20-71,185.32

Finding the Fourth Proportional to 113,603.40, 156,769.20 and 71,185.32

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Solution

The fourth proportional to 113,603.40, 156,769.20 and 71,185.32 is: 98,233.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,603.40 : 156,769.20 = 71,185.32 : x
  2. Step 2: Convert to fraction form
    113,603.40/156,769.20 = 71,185.32/x
  3. Step 3: Cross multiply
    113,603.40x = 156,769.20 × 71,185.32
  4. Step 4: Simplify right side
    113,603.40x = 11,159,665,668.14
  5. Step 5: Solve for x
    x = 11,159,665,668.14/113,603.40
  6. Step 6: Final answer
    x = 98,233.55

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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.