Home / 87,547.40-131,474.70-84,782.60

Finding the Fourth Proportional to 87,547.40, 131,474.70 and 84,782.60

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Solution

The fourth proportional to 87,547.40, 131,474.70 and 84,782.60 is: 127,322.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,547.40 : 131,474.70 = 84,782.60 : x
  2. Step 2: Convert to fraction form
    87,547.40/131,474.70 = 84,782.60/x
  3. Step 3: Cross multiply
    87,547.40x = 131,474.70 × 84,782.60
  4. Step 4: Simplify right side
    87,547.40x = 11,146,766,900.22
  5. Step 5: Solve for x
    x = 11,146,766,900.22/87,547.40
  6. Step 6: Final answer
    x = 127,322.65

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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.