Home / 113,147.60-156,126.35-65,391.74

Finding the Fourth Proportional to 113,147.60, 156,126.35 and 65,391.74

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Solution

The fourth proportional to 113,147.60, 156,126.35 and 65,391.74 is: 90,230.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,147.60 : 156,126.35 = 65,391.74 : x
  2. Step 2: Convert to fraction form
    113,147.60/156,126.35 = 65,391.74/x
  3. Step 3: Cross multiply
    113,147.60x = 156,126.35 × 65,391.74
  4. Step 4: Simplify right side
    113,147.60x = 10,209,373,686.35
  5. Step 5: Solve for x
    x = 10,209,373,686.35/113,147.60
  6. Step 6: Final answer
    x = 90,230.58

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1.5x scale

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.