Home / 112,972.14-155,885.34-67,639.26

Finding the Fourth Proportional to 112,972.14, 155,885.34 and 67,639.26

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Solution

The fourth proportional to 112,972.14, 155,885.34 and 67,639.26 is: 93,332.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,972.14 : 155,885.34 = 67,639.26 : x
  2. Step 2: Convert to fraction form
    112,972.14/155,885.34 = 67,639.26/x
  3. Step 3: Cross multiply
    112,972.14x = 155,885.34 × 67,639.26
  4. Step 4: Simplify right side
    112,972.14x = 10,543,969,042.45
  5. Step 5: Solve for x
    x = 10,543,969,042.45/112,972.14
  6. Step 6: Final answer
    x = 93,332.47

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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.