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Finding the Fourth Proportional to 127,079.71, 175,391.03 and 70,509.31

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Solution

The fourth proportional to 127,079.71, 175,391.03 and 70,509.31 is: 97,314.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,079.71 : 175,391.03 = 70,509.31 : x
  2. Step 2: Convert to fraction form
    127,079.71/175,391.03 = 70,509.31/x
  3. Step 3: Cross multiply
    127,079.71x = 175,391.03 × 70,509.31
  4. Step 4: Simplify right side
    127,079.71x = 12,366,700,505.49
  5. Step 5: Solve for x
    x = 12,366,700,505.49/127,079.71
  6. Step 6: Final answer
    x = 97,314.52

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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.