Home / 99,660.07-137,531.97-54,337.68

Finding the Fourth Proportional to 99,660.07, 137,531.97 and 54,337.68

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Solution

The fourth proportional to 99,660.07, 137,531.97 and 54,337.68 is: 74,986.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,660.07 : 137,531.97 = 54,337.68 : x
  2. Step 2: Convert to fraction form
    99,660.07/137,531.97 = 54,337.68/x
  3. Step 3: Cross multiply
    99,660.07x = 137,531.97 × 54,337.68
  4. Step 4: Simplify right side
    99,660.07x = 7,473,168,175.63
  5. Step 5: Solve for x
    x = 7,473,168,175.63/99,660.07
  6. Step 6: Final answer
    x = 74,986.58

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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.