Home / 129,158.06-178,240.23-71,017.25

Finding the Fourth Proportional to 129,158.06, 178,240.23 and 71,017.25

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Solution

The fourth proportional to 129,158.06, 178,240.23 and 71,017.25 is: 98,004.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,158.06 : 178,240.23 = 71,017.25 : x
  2. Step 2: Convert to fraction form
    129,158.06/178,240.23 = 71,017.25/x
  3. Step 3: Cross multiply
    129,158.06x = 178,240.23 × 71,017.25
  4. Step 4: Simplify right side
    129,158.06x = 12,658,130,082.77
  5. Step 5: Solve for x
    x = 12,658,130,082.77/129,158.06
  6. Step 6: Final answer
    x = 98,004.96

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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.