Home / 99,659.07-137,530.59-54,336.68

Finding the Fourth Proportional to 99,659.07, 137,530.59 and 54,336.68

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Solution

The fourth proportional to 99,659.07, 137,530.59 and 54,336.68 is: 74,985.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,659.07 : 137,530.59 = 54,336.68 : x
  2. Step 2: Convert to fraction form
    99,659.07/137,530.59 = 54,336.68/x
  3. Step 3: Cross multiply
    99,659.07x = 137,530.59 × 54,336.68
  4. Step 4: Simplify right side
    99,659.07x = 7,472,956,002.87
  5. Step 5: Solve for x
    x = 7,472,956,002.87/99,659.07
  6. Step 6: Final answer
    x = 74,985.21

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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.