Home / 235,331.09-353,038.95-85,781.19

Finding the Fourth Proportional to 235,331.09, 353,038.95 and 85,781.19

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Solution

The fourth proportional to 235,331.09, 353,038.95 and 85,781.19 is: 128,687.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,331.09 : 353,038.95 = 85,781.19 : x
  2. Step 2: Convert to fraction form
    235,331.09/353,038.95 = 85,781.19/x
  3. Step 3: Cross multiply
    235,331.09x = 353,038.95 × 85,781.19
  4. Step 4: Simplify right side
    235,331.09x = 30,284,101,247.35
  5. Step 5: Solve for x
    x = 30,284,101,247.35/235,331.09
  6. Step 6: Final answer
    x = 128,687.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.