Home / 99,661.32-137,533.70-54,338.94

Finding the Fourth Proportional to 99,661.32, 137,533.70 and 54,338.94

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Solution

The fourth proportional to 99,661.32, 137,533.70 and 54,338.94 is: 74,988.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,661.32 : 137,533.70 = 54,338.94 : x
  2. Step 2: Convert to fraction form
    99,661.32/137,533.70 = 54,338.94/x
  3. Step 3: Cross multiply
    99,661.32x = 137,533.70 × 54,338.94
  4. Step 4: Simplify right side
    99,661.32x = 7,473,435,608.13
  5. Step 5: Solve for x
    x = 7,473,435,608.13/99,661.32
  6. Step 6: Final answer
    x = 74,988.33

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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.