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Finding the Fourth Proportional to 154,656.48, 213,440.96 and 86,684.96

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Solution

The fourth proportional to 154,656.48, 213,440.96 and 86,684.96 is: 119,633.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,656.48 : 213,440.96 = 86,684.96 : x
  2. Step 2: Convert to fraction form
    154,656.48/213,440.96 = 86,684.96/x
  3. Step 3: Cross multiply
    154,656.48x = 213,440.96 × 86,684.96
  4. Step 4: Simplify right side
    154,656.48x = 18,502,121,079.96
  5. Step 5: Solve for x
    x = 18,502,121,079.96/154,656.48
  6. Step 6: Final answer
    x = 119,633.66

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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.