Home / 155,861.46-215,075.88-87,895.26

Finding the Fourth Proportional to 155,861.46, 215,075.88 and 87,895.26

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Solution

The fourth proportional to 155,861.46, 215,075.88 and 87,895.26 is: 121,288.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,861.46 : 215,075.88 = 87,895.26 : x
  2. Step 2: Convert to fraction form
    155,861.46/215,075.88 = 87,895.26/x
  3. Step 3: Cross multiply
    155,861.46x = 215,075.88 × 87,895.26
  4. Step 4: Simplify right side
    155,861.46x = 18,904,150,392.33
  5. Step 5: Solve for x
    x = 18,904,150,392.33/155,861.46
  6. Step 6: Final answer
    x = 121,288.16

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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.