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Finding the Fourth Proportional to 124,575.68, 171,862.08 and 86,871.80

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Solution

The fourth proportional to 124,575.68, 171,862.08 and 86,871.80 is: 119,846.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,575.68 : 171,862.08 = 86,871.80 : x
  2. Step 2: Convert to fraction form
    124,575.68/171,862.08 = 86,871.80/x
  3. Step 3: Cross multiply
    124,575.68x = 171,862.08 × 86,871.80
  4. Step 4: Simplify right side
    124,575.68x = 14,929,968,241.34
  5. Step 5: Solve for x
    x = 14,929,968,241.34/124,575.68
  6. Step 6: Final answer
    x = 119,846.57

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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.