Home / 112,403.64-155,189.34-72,134.76

Finding the Fourth Proportional to 112,403.64, 155,189.34 and 72,134.76

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Solution

The fourth proportional to 112,403.64, 155,189.34 and 72,134.76 is: 99,592.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,403.64 : 155,189.34 = 72,134.76 : x
  2. Step 2: Convert to fraction form
    112,403.64/155,189.34 = 72,134.76/x
  3. Step 3: Cross multiply
    112,403.64x = 155,189.34 × 72,134.76
  4. Step 4: Simplify right side
    112,403.64x = 11,194,545,795.46
  5. Step 5: Solve for x
    x = 11,194,545,795.46/112,403.64
  6. Step 6: Final answer
    x = 99,592.38

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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.