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Finding the Fourth Proportional to 127,955.20, 191,587.20 and 100,307.20

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Solution

The fourth proportional to 127,955.20, 191,587.20 and 100,307.20 is: 150,189.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,955.20 : 191,587.20 = 100,307.20 : x
  2. Step 2: Convert to fraction form
    127,955.20/191,587.20 = 100,307.20/x
  3. Step 3: Cross multiply
    127,955.20x = 191,587.20 × 100,307.20
  4. Step 4: Simplify right side
    127,955.20x = 19,217,575,587.84
  5. Step 5: Solve for x
    x = 19,217,575,587.84/127,955.20
  6. Step 6: Final answer
    x = 150,189.88

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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.