Home / 127,165.20-190,747.80-38,432.40

Finding the Fourth Proportional to 127,165.20, 190,747.80 and 38,432.40

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Solution

The fourth proportional to 127,165.20, 190,747.80 and 38,432.40 is: 57,648.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,165.20 : 190,747.80 = 38,432.40 : x
  2. Step 2: Convert to fraction form
    127,165.20/190,747.80 = 38,432.40/x
  3. Step 3: Cross multiply
    127,165.20x = 190,747.80 × 38,432.40
  4. Step 4: Simplify right side
    127,165.20x = 7,330,895,748.72
  5. Step 5: Solve for x
    x = 7,330,895,748.72/127,165.20
  6. Step 6: Final answer
    x = 57,648.60

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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.