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Finding the Fourth Proportional to 132,908.76, 183,411.81 and 72,479.52

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Solution

The fourth proportional to 132,908.76, 183,411.81 and 72,479.52 is: 100,020.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,908.76 : 183,411.81 = 72,479.52 : x
  2. Step 2: Convert to fraction form
    132,908.76/183,411.81 = 72,479.52/x
  3. Step 3: Cross multiply
    132,908.76x = 183,411.81 × 72,479.52
  4. Step 4: Simplify right side
    132,908.76x = 13,293,599,951.13
  5. Step 5: Solve for x
    x = 13,293,599,951.13/132,908.76
  6. Step 6: Final answer
    x = 100,020.49

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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.