Home / 113,382.40-156,484.56-65,637.76

Finding the Fourth Proportional to 113,382.40, 156,484.56 and 65,637.76

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Solution

The fourth proportional to 113,382.40, 156,484.56 and 65,637.76 is: 90,589.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,382.40 : 156,484.56 = 65,637.76 : x
  2. Step 2: Convert to fraction form
    113,382.40/156,484.56 = 65,637.76/x
  3. Step 3: Cross multiply
    113,382.40x = 156,484.56 × 65,637.76
  4. Step 4: Simplify right side
    113,382.40x = 10,271,295,992.99
  5. Step 5: Solve for x
    x = 10,271,295,992.99/113,382.40
  6. Step 6: Final answer
    x = 90,589.86

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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.