Home / 115,218.18-158,957.18-85,075.85

Finding the Fourth Proportional to 115,218.18, 158,957.18 and 85,075.85

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Solution

The fourth proportional to 115,218.18, 158,957.18 and 85,075.85 is: 117,372.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,218.18 : 158,957.18 = 85,075.85 : x
  2. Step 2: Convert to fraction form
    115,218.18/158,957.18 = 85,075.85/x
  3. Step 3: Cross multiply
    115,218.18x = 158,957.18 × 85,075.85
  4. Step 4: Simplify right side
    115,218.18x = 13,523,417,971.70
  5. Step 5: Solve for x
    x = 13,523,417,971.70/115,218.18
  6. Step 6: Final answer
    x = 117,372.26

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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.