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Finding the Fourth Proportional to 169,600.40, 254,400.60 and 86,656.40

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Solution

The fourth proportional to 169,600.40, 254,400.60 and 86,656.40 is: 129,984.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,600.40 : 254,400.60 = 86,656.40 : x
  2. Step 2: Convert to fraction form
    169,600.40/254,400.60 = 86,656.40/x
  3. Step 3: Cross multiply
    169,600.40x = 254,400.60 × 86,656.40
  4. Step 4: Simplify right side
    169,600.40x = 22,045,440,153.84
  5. Step 5: Solve for x
    x = 22,045,440,153.84/169,600.40
  6. Step 6: Final answer
    x = 129,984.60

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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.