Home / 99,120.79-136,787.66-53,799.18

Finding the Fourth Proportional to 99,120.79, 136,787.66 and 53,799.18

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Solution

The fourth proportional to 99,120.79, 136,787.66 and 53,799.18 is: 74,243.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,120.79 : 136,787.66 = 53,799.18 : x
  2. Step 2: Convert to fraction form
    99,120.79/136,787.66 = 53,799.18/x
  3. Step 3: Cross multiply
    99,120.79x = 136,787.66 × 53,799.18
  4. Step 4: Simplify right side
    99,120.79x = 7,359,063,942.12
  5. Step 5: Solve for x
    x = 7,359,063,942.12/99,120.79
  6. Step 6: Final answer
    x = 74,243.39

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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.