Home / 113,215.75-156,197.91-67,908.40

Finding the Fourth Proportional to 113,215.75, 156,197.91 and 67,908.40

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Solution

The fourth proportional to 113,215.75, 156,197.91 and 67,908.40 is: 93,689.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,215.75 : 156,197.91 = 67,908.40 : x
  2. Step 2: Convert to fraction form
    113,215.75/156,197.91 = 67,908.40/x
  3. Step 3: Cross multiply
    113,215.75x = 156,197.91 × 67,908.40
  4. Step 4: Simplify right side
    113,215.75x = 10,607,150,151.44
  5. Step 5: Solve for x
    x = 10,607,150,151.44/113,215.75
  6. Step 6: Final answer
    x = 93,689.70

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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.