Home / 112,543.28-155,236.56-72,193.16

Finding the Fourth Proportional to 112,543.28, 155,236.56 and 72,193.16

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Solution

The fourth proportional to 112,543.28, 155,236.56 and 72,193.16 is: 99,579.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,543.28 : 155,236.56 = 72,193.16 : x
  2. Step 2: Convert to fraction form
    112,543.28/155,236.56 = 72,193.16/x
  3. Step 3: Cross multiply
    112,543.28x = 155,236.56 × 72,193.16
  4. Step 4: Simplify right side
    112,543.28x = 11,207,017,813.93
  5. Step 5: Solve for x
    x = 11,207,017,813.93/112,543.28
  6. Step 6: Final answer
    x = 99,579.63

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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.