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Finding the Fourth Proportional to 180,430.80, 270,502.02 and 85,613.28

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Solution

The fourth proportional to 180,430.80, 270,502.02 and 85,613.28 is: 128,351.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,430.80 : 270,502.02 = 85,613.28 : x
  2. Step 2: Convert to fraction form
    180,430.80/270,502.02 = 85,613.28/x
  3. Step 3: Cross multiply
    180,430.80x = 270,502.02 × 85,613.28
  4. Step 4: Simplify right side
    180,430.80x = 23,158,565,178.83
  5. Step 5: Solve for x
    x = 23,158,565,178.83/180,430.80
  6. Step 6: Final answer
    x = 128,351.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.