Home / 87,507.65-131,228.64-69,005.63

Finding the Fourth Proportional to 87,507.65, 131,228.64 and 69,005.63

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Solution

The fourth proportional to 87,507.65, 131,228.64 and 69,005.63 is: 103,482.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,507.65 : 131,228.64 = 69,005.63 : x
  2. Step 2: Convert to fraction form
    87,507.65/131,228.64 = 69,005.63/x
  3. Step 3: Cross multiply
    87,507.65x = 131,228.64 × 69,005.63
  4. Step 4: Simplify right side
    87,507.65x = 9,055,515,305.31
  5. Step 5: Solve for x
    x = 9,055,515,305.31/87,507.65
  6. Step 6: Final answer
    x = 103,482.55

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1.5x scale

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.