Home / 127,631.40-191,487.90-38,901.80

Finding the Fourth Proportional to 127,631.40, 191,487.90 and 38,901.80

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Solution

The fourth proportional to 127,631.40, 191,487.90 and 38,901.80 is: 58,365.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,631.40 : 191,487.90 = 38,901.80 : x
  2. Step 2: Convert to fraction form
    127,631.40/191,487.90 = 38,901.80/x
  3. Step 3: Cross multiply
    127,631.40x = 191,487.90 × 38,901.80
  4. Step 4: Simplify right side
    127,631.40x = 7,449,223,988.22
  5. Step 5: Solve for x
    x = 7,449,223,988.22/127,631.40
  6. Step 6: Final answer
    x = 58,365.14

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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.