Home / 99,739.39-137,639.89-54,417.24

Finding the Fourth Proportional to 99,739.39, 137,639.89 and 54,417.24

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Solution

The fourth proportional to 99,739.39, 137,639.89 and 54,417.24 is: 75,095.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,739.39 : 137,639.89 = 54,417.24 : x
  2. Step 2: Convert to fraction form
    99,739.39/137,639.89 = 54,417.24/x
  3. Step 3: Cross multiply
    99,739.39x = 137,639.89 × 54,417.24
  4. Step 4: Simplify right side
    99,739.39x = 7,489,982,927.70
  5. Step 5: Solve for x
    x = 7,489,982,927.70/99,739.39
  6. Step 6: Final answer
    x = 75,095.54

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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.