Home / 127,930.80-191,646.78-77,886.78

Finding the Fourth Proportional to 127,930.80, 191,646.78 and 77,886.78

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Solution

The fourth proportional to 127,930.80, 191,646.78 and 77,886.78 is: 116,678.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,930.80 : 191,646.78 = 77,886.78 : x
  2. Step 2: Convert to fraction form
    127,930.80/191,646.78 = 77,886.78/x
  3. Step 3: Cross multiply
    127,930.80x = 191,646.78 × 77,886.78
  4. Step 4: Simplify right side
    127,930.80x = 14,926,750,591.57
  5. Step 5: Solve for x
    x = 14,926,750,591.57/127,930.80
  6. Step 6: Final answer
    x = 116,678.32

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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.