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Finding the Fourth Proportional to 127,275, 175,643.15 and 70,690.02

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Solution

The fourth proportional to 127,275, 175,643.15 and 70,690.02 is: 97,554.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,275 : 175,643.15 = 70,690.02 : x
  2. Step 2: Convert to fraction form
    127,275/175,643.15 = 70,690.02/x
  3. Step 3: Cross multiply
    127,275x = 175,643.15 × 70,690.02
  4. Step 4: Simplify right side
    127,275x = 12,416,217,432.91
  5. Step 5: Solve for x
    x = 12,416,217,432.91/127,275
  6. Step 6: Final answer
    x = 97,554.25

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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.