Home / 112,419.64-155,211.44-72,150.76

Finding the Fourth Proportional to 112,419.64, 155,211.44 and 72,150.76

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Solution

The fourth proportional to 112,419.64, 155,211.44 and 72,150.76 is: 99,614.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,419.64 : 155,211.44 = 72,150.76 : x
  2. Step 2: Convert to fraction form
    112,419.64/155,211.44 = 72,150.76/x
  3. Step 3: Cross multiply
    112,419.64x = 155,211.44 × 72,150.76
  4. Step 4: Simplify right side
    112,419.64x = 11,198,623,356.69
  5. Step 5: Solve for x
    x = 11,198,623,356.69/112,419.64
  6. Step 6: Final answer
    x = 99,614.47

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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.