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Finding the Fourth Proportional to 124,209.42, 171,409.05 and 67,621.02

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Solution

The fourth proportional to 124,209.42, 171,409.05 and 67,621.02 is: 93,317.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,209.42 : 171,409.05 = 67,621.02 : x
  2. Step 2: Convert to fraction form
    124,209.42/171,409.05 = 67,621.02/x
  3. Step 3: Cross multiply
    124,209.42x = 171,409.05 × 67,621.02
  4. Step 4: Simplify right side
    124,209.42x = 11,590,854,798.23
  5. Step 5: Solve for x
    x = 11,590,854,798.23/124,209.42
  6. Step 6: Final answer
    x = 93,317.04

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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.