Home / 112,315.20-155,105.85-88,400.35

Finding the Fourth Proportional to 112,315.20, 155,105.85 and 88,400.35

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Solution

The fourth proportional to 112,315.20, 155,105.85 and 88,400.35 is: 122,079.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,315.20 : 155,105.85 = 88,400.35 : x
  2. Step 2: Convert to fraction form
    112,315.20/155,105.85 = 88,400.35/x
  3. Step 3: Cross multiply
    112,315.20x = 155,105.85 × 88,400.35
  4. Step 4: Simplify right side
    112,315.20x = 13,711,411,427.05
  5. Step 5: Solve for x
    x = 13,711,411,427.05/112,315.20
  6. Step 6: Final answer
    x = 122,079.75

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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.