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Finding the Fourth Proportional to 127,039.40, 175,325.14 and 70,469

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Solution

The fourth proportional to 127,039.40, 175,325.14 and 70,469 is: 97,253.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,039.40 : 175,325.14 = 70,469 : x
  2. Step 2: Convert to fraction form
    127,039.40/175,325.14 = 70,469/x
  3. Step 3: Cross multiply
    127,039.40x = 175,325.14 × 70,469
  4. Step 4: Simplify right side
    127,039.40x = 12,354,987,290.66
  5. Step 5: Solve for x
    x = 12,354,987,290.66/127,039.40
  6. Step 6: Final answer
    x = 97,253.19

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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.