Home / 99,043.38-136,678.71-53,720.55

Finding the Fourth Proportional to 99,043.38, 136,678.71 and 53,720.55

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Solution

The fourth proportional to 99,043.38, 136,678.71 and 53,720.55 is: 74,133.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,043.38 : 136,678.71 = 53,720.55 : x
  2. Step 2: Convert to fraction form
    99,043.38/136,678.71 = 53,720.55/x
  3. Step 3: Cross multiply
    99,043.38x = 136,678.71 × 53,720.55
  4. Step 4: Simplify right side
    99,043.38x = 7,342,455,474.49
  5. Step 5: Solve for x
    x = 7,342,455,474.49/99,043.38
  6. Step 6: Final answer
    x = 74,133.73

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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.