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Finding the Fourth Proportional to 119,432.61, 164,814.75 and 65,716.65

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Solution

The fourth proportional to 119,432.61, 164,814.75 and 65,716.65 is: 90,687.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,432.61 : 164,814.75 = 65,716.65 : x
  2. Step 2: Convert to fraction form
    119,432.61/164,814.75 = 65,716.65/x
  3. Step 3: Cross multiply
    119,432.61x = 164,814.75 × 65,716.65
  4. Step 4: Simplify right side
    119,432.61x = 10,831,073,240.59
  5. Step 5: Solve for x
    x = 10,831,073,240.59/119,432.61
  6. Step 6: Final answer
    x = 90,687.74

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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.