Home / 99,943.50-137,922.57-54,621.93

Finding the Fourth Proportional to 99,943.50, 137,922.57 and 54,621.93

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Solution

The fourth proportional to 99,943.50, 137,922.57 and 54,621.93 is: 75,378.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,943.50 : 137,922.57 = 54,621.93 : x
  2. Step 2: Convert to fraction form
    99,943.50/137,922.57 = 54,621.93/x
  3. Step 3: Cross multiply
    99,943.50x = 137,922.57 × 54,621.93
  4. Step 4: Simplify right side
    99,943.50x = 7,533,596,963.96
  5. Step 5: Solve for x
    x = 7,533,596,963.96/99,943.50
  6. Step 6: Final answer
    x = 75,378.56

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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.