Home / 112,681.71-155,508.26-64,938.13

Finding the Fourth Proportional to 112,681.71, 155,508.26 and 64,938.13

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Solution

The fourth proportional to 112,681.71, 155,508.26 and 64,938.13 is: 89,618.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,681.71 : 155,508.26 = 64,938.13 : x
  2. Step 2: Convert to fraction form
    112,681.71/155,508.26 = 64,938.13/x
  3. Step 3: Cross multiply
    112,681.71x = 155,508.26 × 64,938.13
  4. Step 4: Simplify right side
    112,681.71x = 10,098,414,890.49
  5. Step 5: Solve for x
    x = 10,098,414,890.49/112,681.71
  6. Step 6: Final answer
    x = 89,618.94

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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.