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Finding the Fourth Proportional to 127,287.84, 175,663.44 and 70,698

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Solution

The fourth proportional to 127,287.84, 175,663.44 and 70,698 is: 97,566.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,287.84 : 175,663.44 = 70,698 : x
  2. Step 2: Convert to fraction form
    127,287.84/175,663.44 = 70,698/x
  3. Step 3: Cross multiply
    127,287.84x = 175,663.44 × 70,698
  4. Step 4: Simplify right side
    127,287.84x = 12,419,053,881.12
  5. Step 5: Solve for x
    x = 12,419,053,881.12/127,287.84
  6. Step 6: Final answer
    x = 97,566.70

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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.