Home / 127,430.28-191,140.55-38,680.20

Finding the Fourth Proportional to 127,430.28, 191,140.55 and 38,680.20

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Solution

The fourth proportional to 127,430.28, 191,140.55 and 38,680.20 is: 58,018.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,430.28 : 191,140.55 = 38,680.20 : x
  2. Step 2: Convert to fraction form
    127,430.28/191,140.55 = 38,680.20/x
  3. Step 3: Cross multiply
    127,430.28x = 191,140.55 × 38,680.20
  4. Step 4: Simplify right side
    127,430.28x = 7,393,354,702.11
  5. Step 5: Solve for x
    x = 7,393,354,702.11/127,430.28
  6. Step 6: Final answer
    x = 58,018.82

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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.