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Finding the Fourth Proportional to 121,283.70, 181,925.55 and 108,453.30

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Solution

The fourth proportional to 121,283.70, 181,925.55 and 108,453.30 is: 162,679.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,283.70 : 181,925.55 = 108,453.30 : x
  2. Step 2: Convert to fraction form
    121,283.70/181,925.55 = 108,453.30/x
  3. Step 3: Cross multiply
    121,283.70x = 181,925.55 × 108,453.30
  4. Step 4: Simplify right side
    121,283.70x = 19,730,426,251.82
  5. Step 5: Solve for x
    x = 19,730,426,251.82/121,283.70
  6. Step 6: Final answer
    x = 162,679.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.