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Finding the Fourth Proportional to 99,437.40, 137,223.60 and 54,725.40

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Solution

The fourth proportional to 99,437.40, 137,223.60 and 54,725.40 is: 75,521.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,437.40 : 137,223.60 = 54,725.40 : x
  2. Step 2: Convert to fraction form
    99,437.40/137,223.60 = 54,725.40/x
  3. Step 3: Cross multiply
    99,437.40x = 137,223.60 × 54,725.40
  4. Step 4: Simplify right side
    99,437.40x = 7,509,616,399.44
  5. Step 5: Solve for x
    x = 7,509,616,399.44/99,437.40
  6. Step 6: Final answer
    x = 75,521.05

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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.