Home / 112,655.64-155,377.98-78,652.92

Finding the Fourth Proportional to 112,655.64, 155,377.98 and 78,652.92

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Solution

The fourth proportional to 112,655.64, 155,377.98 and 78,652.92 is: 108,480.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,655.64 : 155,377.98 = 78,652.92 : x
  2. Step 2: Convert to fraction form
    112,655.64/155,377.98 = 78,652.92/x
  3. Step 3: Cross multiply
    112,655.64x = 155,377.98 × 78,652.92
  4. Step 4: Simplify right side
    112,655.64x = 12,220,931,830.70
  5. Step 5: Solve for x
    x = 12,220,931,830.70/112,655.64
  6. Step 6: Final answer
    x = 108,480.43

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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.