Home / 127,128.38-175,437.16-70,548.86

Finding the Fourth Proportional to 127,128.38, 175,437.16 and 70,548.86

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Solution

The fourth proportional to 127,128.38, 175,437.16 and 70,548.86 is: 97,357.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,128.38 : 175,437.16 = 70,548.86 : x
  2. Step 2: Convert to fraction form
    127,128.38/175,437.16 = 70,548.86/x
  3. Step 3: Cross multiply
    127,128.38x = 175,437.16 × 70,548.86
  4. Step 4: Simplify right side
    127,128.38x = 12,376,890,586.08
  5. Step 5: Solve for x
    x = 12,376,890,586.08/127,128.38
  6. Step 6: Final answer
    x = 97,357.42

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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.