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Finding the Fourth Proportional to 133,245.58, 183,881.32 and 72,818.78

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Solution

The fourth proportional to 133,245.58, 183,881.32 and 72,818.78 is: 100,491.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,245.58 : 183,881.32 = 72,818.78 : x
  2. Step 2: Convert to fraction form
    133,245.58/183,881.32 = 72,818.78/x
  3. Step 3: Cross multiply
    133,245.58x = 183,881.32 × 72,818.78
  4. Step 4: Simplify right side
    133,245.58x = 13,390,013,387.19
  5. Step 5: Solve for x
    x = 13,390,013,387.19/133,245.58
  6. Step 6: Final answer
    x = 100,491.24

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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.