Home / 113,138.60-156,113.93-65,382.74

Finding the Fourth Proportional to 113,138.60, 156,113.93 and 65,382.74

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Solution

The fourth proportional to 113,138.60, 156,113.93 and 65,382.74 is: 90,218.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,138.60 : 156,113.93 = 65,382.74 : x
  2. Step 2: Convert to fraction form
    113,138.60/156,113.93 = 65,382.74/x
  3. Step 3: Cross multiply
    113,138.60x = 156,113.93 × 65,382.74
  4. Step 4: Simplify right side
    113,138.60x = 10,207,155,878.46
  5. Step 5: Solve for x
    x = 10,207,155,878.46/113,138.60
  6. Step 6: Final answer
    x = 90,218.15

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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.