Home / 87,549.02-121,305.57-85,657.26

Finding the Fourth Proportional to 87,549.02, 121,305.57 and 85,657.26

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Solution

The fourth proportional to 87,549.02, 121,305.57 and 85,657.26 is: 118,684.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,549.02 : 121,305.57 = 85,657.26 : x
  2. Step 2: Convert to fraction form
    87,549.02/121,305.57 = 85,657.26/x
  3. Step 3: Cross multiply
    87,549.02x = 121,305.57 × 85,657.26
  4. Step 4: Simplify right side
    87,549.02x = 10,390,702,748.94
  5. Step 5: Solve for x
    x = 10,390,702,748.94/87,549.02
  6. Step 6: Final answer
    x = 118,684.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.