Home / 112,715.72-155,520.99-66,752.15

Finding the Fourth Proportional to 112,715.72, 155,520.99 and 66,752.15

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Solution

The fourth proportional to 112,715.72, 155,520.99 and 66,752.15 is: 92,102.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,715.72 : 155,520.99 = 66,752.15 : x
  2. Step 2: Convert to fraction form
    112,715.72/155,520.99 = 66,752.15/x
  3. Step 3: Cross multiply
    112,715.72x = 155,520.99 × 66,752.15
  4. Step 4: Simplify right side
    112,715.72x = 10,381,360,452.63
  5. Step 5: Solve for x
    x = 10,381,360,452.63/112,715.72
  6. Step 6: Final answer
    x = 92,102.15

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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.