Home / 99,715.40-137,608.13-54,393.59

Finding the Fourth Proportional to 99,715.40, 137,608.13 and 54,393.59

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Solution

The fourth proportional to 99,715.40, 137,608.13 and 54,393.59 is: 75,063.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,715.40 : 137,608.13 = 54,393.59 : x
  2. Step 2: Convert to fraction form
    99,715.40/137,608.13 = 54,393.59/x
  3. Step 3: Cross multiply
    99,715.40x = 137,608.13 × 54,393.59
  4. Step 4: Simplify right side
    99,715.40x = 7,484,999,651.83
  5. Step 5: Solve for x
    x = 7,484,999,651.83/99,715.40
  6. Step 6: Final answer
    x = 75,063.63

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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.