Home / 157,187.18-216,918.34-85,567.75

Finding the Fourth Proportional to 157,187.18, 216,918.34 and 85,567.75

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Solution

The fourth proportional to 157,187.18, 216,918.34 and 85,567.75 is: 118,083.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,187.18 : 216,918.34 = 85,567.75 : x
  2. Step 2: Convert to fraction form
    157,187.18/216,918.34 = 85,567.75/x
  3. Step 3: Cross multiply
    157,187.18x = 216,918.34 × 85,567.75
  4. Step 4: Simplify right side
    157,187.18x = 18,561,213,531.32
  5. Step 5: Solve for x
    x = 18,561,213,531.32/157,187.18
  6. Step 6: Final answer
    x = 118,083.51

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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.