Home / 99,983.30-137,975.39-54,660.24

Finding the Fourth Proportional to 99,983.30, 137,975.39 and 54,660.24

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Solution

The fourth proportional to 99,983.30, 137,975.39 and 54,660.24 is: 75,430.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,983.30 : 137,975.39 = 54,660.24 : x
  2. Step 2: Convert to fraction form
    99,983.30/137,975.39 = 54,660.24/x
  3. Step 3: Cross multiply
    99,983.30x = 137,975.39 × 54,660.24
  4. Step 4: Simplify right side
    99,983.30x = 7,541,767,931.49
  5. Step 5: Solve for x
    x = 7,541,767,931.49/99,983.30
  6. Step 6: Final answer
    x = 75,430.28

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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.