Home / 99,661.07-137,533.36-54,338.69

Finding the Fourth Proportional to 99,661.07, 137,533.36 and 54,338.69

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Solution

The fourth proportional to 99,661.07, 137,533.36 and 54,338.69 is: 74,987.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,661.07 : 137,533.36 = 54,338.69 : x
  2. Step 2: Convert to fraction form
    99,661.07/137,533.36 = 54,338.69/x
  3. Step 3: Cross multiply
    99,661.07x = 137,533.36 × 54,338.69
  4. Step 4: Simplify right side
    99,661.07x = 7,473,382,613.70
  5. Step 5: Solve for x
    x = 7,473,382,613.70/99,661.07
  6. Step 6: Final answer
    x = 74,987.98

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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.