Home / 112,812.14-155,685.07-64,421.97

Finding the Fourth Proportional to 112,812.14, 155,685.07 and 64,421.97

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Solution

The fourth proportional to 112,812.14, 155,685.07 and 64,421.97 is: 88,904.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,812.14 : 155,685.07 = 64,421.97 : x
  2. Step 2: Convert to fraction form
    112,812.14/155,685.07 = 64,421.97/x
  3. Step 3: Cross multiply
    112,812.14x = 155,685.07 × 64,421.97
  4. Step 4: Simplify right side
    112,812.14x = 10,029,538,405.70
  5. Step 5: Solve for x
    x = 10,029,538,405.70/112,812.14
  6. Step 6: Final answer
    x = 88,904.78

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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.