Home / 113,215.97-156,397.50-107,237.25

Finding the Fourth Proportional to 113,215.97, 156,397.50 and 107,237.25

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Solution

The fourth proportional to 113,215.97, 156,397.50 and 107,237.25 is: 148,138.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,215.97 : 156,397.50 = 107,237.25 : x
  2. Step 2: Convert to fraction form
    113,215.97/156,397.50 = 107,237.25/x
  3. Step 3: Cross multiply
    113,215.97x = 156,397.50 × 107,237.25
  4. Step 4: Simplify right side
    113,215.97x = 16,771,637,806.88
  5. Step 5: Solve for x
    x = 16,771,637,806.88/113,215.97
  6. Step 6: Final answer
    x = 148,138.45

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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.