Home / 130,613.88-180,266.85-79,656.18

Finding the Fourth Proportional to 130,613.88, 180,266.85 and 79,656.18

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Solution

The fourth proportional to 130,613.88, 180,266.85 and 79,656.18 is: 109,937.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,613.88 : 180,266.85 = 79,656.18 : x
  2. Step 2: Convert to fraction form
    130,613.88/180,266.85 = 79,656.18/x
  3. Step 3: Cross multiply
    130,613.88x = 180,266.85 × 79,656.18
  4. Step 4: Simplify right side
    130,613.88x = 14,359,368,651.63
  5. Step 5: Solve for x
    x = 14,359,368,651.63/130,613.88
  6. Step 6: Final answer
    x = 109,937.54

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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.