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Finding the Fourth Proportional to 127,459.17, 175,870.62 and 72,268.65

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Solution

The fourth proportional to 127,459.17, 175,870.62 and 72,268.65 is: 99,717.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,459.17 : 175,870.62 = 72,268.65 : x
  2. Step 2: Convert to fraction form
    127,459.17/175,870.62 = 72,268.65/x
  3. Step 3: Cross multiply
    127,459.17x = 175,870.62 × 72,268.65
  4. Step 4: Simplify right side
    127,459.17x = 12,709,932,282.06
  5. Step 5: Solve for x
    x = 12,709,932,282.06/127,459.17
  6. Step 6: Final answer
    x = 99,717.68

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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.