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Finding the Fourth Proportional to 127,605, 176,094.90 and 71,020.02

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Solution

The fourth proportional to 127,605, 176,094.90 and 71,020.02 is: 98,007.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,605 : 176,094.90 = 71,020.02 : x
  2. Step 2: Convert to fraction form
    127,605/176,094.90 = 71,020.02/x
  3. Step 3: Cross multiply
    127,605x = 176,094.90 × 71,020.02
  4. Step 4: Simplify right side
    127,605x = 12,506,263,319.90
  5. Step 5: Solve for x
    x = 12,506,263,319.90/127,605
  6. Step 6: Final answer
    x = 98,007.63

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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.