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Finding the Fourth Proportional to 127,371.78, 175,779.45 and 70,788.42

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Solution

The fourth proportional to 127,371.78, 175,779.45 and 70,788.42 is: 97,691.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,371.78 : 175,779.45 = 70,788.42 : x
  2. Step 2: Convert to fraction form
    127,371.78/175,779.45 = 70,788.42/x
  3. Step 3: Cross multiply
    127,371.78x = 175,779.45 × 70,788.42
  4. Step 4: Simplify right side
    127,371.78x = 12,443,149,533.97
  5. Step 5: Solve for x
    x = 12,443,149,533.97/127,371.78
  6. Step 6: Final answer
    x = 97,691.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.