Home / 127,639.40-191,459.14-57,436.70

Finding the Fourth Proportional to 127,639.40, 191,459.14 and 57,436.70

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Solution

The fourth proportional to 127,639.40, 191,459.14 and 57,436.70 is: 86,155.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,639.40 : 191,459.14 = 57,436.70 : x
  2. Step 2: Convert to fraction form
    127,639.40/191,459.14 = 57,436.70/x
  3. Step 3: Cross multiply
    127,639.40x = 191,459.14 × 57,436.70
  4. Step 4: Simplify right side
    127,639.40x = 10,996,781,186.44
  5. Step 5: Solve for x
    x = 10,996,781,186.44/127,639.40
  6. Step 6: Final answer
    x = 86,155.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.