Home / 129,475.06-178,730.88-87,058.18

Finding the Fourth Proportional to 129,475.06, 178,730.88 and 87,058.18

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Solution

The fourth proportional to 129,475.06, 178,730.88 and 87,058.18 is: 120,177.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,475.06 : 178,730.88 = 87,058.18 : x
  2. Step 2: Convert to fraction form
    129,475.06/178,730.88 = 87,058.18/x
  3. Step 3: Cross multiply
    129,475.06x = 178,730.88 × 87,058.18
  4. Step 4: Simplify right side
    129,475.06x = 15,559,985,122.60
  5. Step 5: Solve for x
    x = 15,559,985,122.60/129,475.06
  6. Step 6: Final answer
    x = 120,177.47

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1.5x scale

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.