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Finding the Fourth Proportional to 132,612.16, 183,020.34 and 74,478.42

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Solution

The fourth proportional to 132,612.16, 183,020.34 and 74,478.42 is: 102,788.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,612.16 : 183,020.34 = 74,478.42 : x
  2. Step 2: Convert to fraction form
    132,612.16/183,020.34 = 74,478.42/x
  3. Step 3: Cross multiply
    132,612.16x = 183,020.34 × 74,478.42
  4. Step 4: Simplify right side
    132,612.16x = 13,631,065,751.06
  5. Step 5: Solve for x
    x = 13,631,065,751.06/132,612.16
  6. Step 6: Final answer
    x = 102,788.96

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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.