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Finding the Fourth Proportional to 127,143.92, 175,459.29 and 70,555.30

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Solution

The fourth proportional to 127,143.92, 175,459.29 and 70,555.30 is: 97,366.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,143.92 : 175,459.29 = 70,555.30 : x
  2. Step 2: Convert to fraction form
    127,143.92/175,459.29 = 70,555.30/x
  3. Step 3: Cross multiply
    127,143.92x = 175,459.29 × 70,555.30
  4. Step 4: Simplify right side
    127,143.92x = 12,379,582,843.74
  5. Step 5: Solve for x
    x = 12,379,582,843.74/127,143.92
  6. Step 6: Final answer
    x = 97,366.69

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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.