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Finding the Fourth Proportional to 119,275.80, 164,601.51 and 65,561.70

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Solution

The fourth proportional to 119,275.80, 164,601.51 and 65,561.70 is: 90,475.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,275.80 : 164,601.51 = 65,561.70 : x
  2. Step 2: Convert to fraction form
    119,275.80/164,601.51 = 65,561.70/x
  3. Step 3: Cross multiply
    119,275.80x = 164,601.51 × 65,561.70
  4. Step 4: Simplify right side
    119,275.80x = 10,791,554,818.17
  5. Step 5: Solve for x
    x = 10,791,554,818.17/119,275.80
  6. Step 6: Final answer
    x = 90,475.64

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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.