Home / 100,319.24-138,452.06-57,305.50

Finding the Fourth Proportional to 100,319.24, 138,452.06 and 57,305.50

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Solution

The fourth proportional to 100,319.24, 138,452.06 and 57,305.50 is: 79,088.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,319.24 : 138,452.06 = 57,305.50 : x
  2. Step 2: Convert to fraction form
    100,319.24/138,452.06 = 57,305.50/x
  3. Step 3: Cross multiply
    100,319.24x = 138,452.06 × 57,305.50
  4. Step 4: Simplify right side
    100,319.24x = 7,934,064,524.33
  5. Step 5: Solve for x
    x = 7,934,064,524.33/100,319.24
  6. Step 6: Final answer
    x = 79,088.16

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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.