Home / 87,298.88-130,969.28-28,140.16

Finding the Fourth Proportional to 87,298.88, 130,969.28 and 28,140.16

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Solution

The fourth proportional to 87,298.88, 130,969.28 and 28,140.16 is: 42,217.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,298.88 : 130,969.28 = 28,140.16 : x
  2. Step 2: Convert to fraction form
    87,298.88/130,969.28 = 28,140.16/x
  3. Step 3: Cross multiply
    87,298.88x = 130,969.28 × 28,140.16
  4. Step 4: Simplify right side
    87,298.88x = 3,685,496,494.28
  5. Step 5: Solve for x
    x = 3,685,496,494.28/87,298.88
  6. Step 6: Final answer
    x = 42,217.00

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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.