Home / 127,865.40-191,798.10-39,119.10

Finding the Fourth Proportional to 127,865.40, 191,798.10 and 39,119.10

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Solution

The fourth proportional to 127,865.40, 191,798.10 and 39,119.10 is: 58,678.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,865.40 : 191,798.10 = 39,119.10 : x
  2. Step 2: Convert to fraction form
    127,865.40/191,798.10 = 39,119.10/x
  3. Step 3: Cross multiply
    127,865.40x = 191,798.10 × 39,119.10
  4. Step 4: Simplify right side
    127,865.40x = 7,502,969,053.71
  5. Step 5: Solve for x
    x = 7,502,969,053.71/127,865.40
  6. Step 6: Final answer
    x = 58,678.65

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Similar ratio
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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.