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Finding the Fourth Proportional to 122,361.42, 168,680.01 and 86,488.14

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Solution

The fourth proportional to 122,361.42, 168,680.01 and 86,488.14 is: 119,227.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,361.42 : 168,680.01 = 86,488.14 : x
  2. Step 2: Convert to fraction form
    122,361.42/168,680.01 = 86,488.14/x
  3. Step 3: Cross multiply
    122,361.42x = 168,680.01 × 86,488.14
  4. Step 4: Simplify right side
    122,361.42x = 14,588,820,320.08
  5. Step 5: Solve for x
    x = 14,588,820,320.08/122,361.42
  6. Step 6: Final answer
    x = 119,227.29

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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.