Home / 130,718.12-180,384.42-74,134.76

Finding the Fourth Proportional to 130,718.12, 180,384.42 and 74,134.76

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Solution

The fourth proportional to 130,718.12, 180,384.42 and 74,134.76 is: 102,302.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,718.12 : 180,384.42 = 74,134.76 : x
  2. Step 2: Convert to fraction form
    130,718.12/180,384.42 = 74,134.76/x
  3. Step 3: Cross multiply
    130,718.12x = 180,384.42 × 74,134.76
  4. Step 4: Simplify right side
    130,718.12x = 13,372,755,684.44
  5. Step 5: Solve for x
    x = 13,372,755,684.44/130,718.12
  6. Step 6: Final answer
    x = 102,302.23

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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.