Home / 99,945.12-137,924.40-57,502.80

Finding the Fourth Proportional to 99,945.12, 137,924.40 and 57,502.80

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Solution

The fourth proportional to 99,945.12, 137,924.40 and 57,502.80 is: 79,353.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,945.12 : 137,924.40 = 57,502.80 : x
  2. Step 2: Convert to fraction form
    99,945.12/137,924.40 = 57,502.80/x
  3. Step 3: Cross multiply
    99,945.12x = 137,924.40 × 57,502.80
  4. Step 4: Simplify right side
    99,945.12x = 7,931,039,188.32
  5. Step 5: Solve for x
    x = 7,931,039,188.32/99,945.12
  6. Step 6: Final answer
    x = 79,353.94

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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.