Home / 129,325.20-178,367.50-84,017.68

Finding the Fourth Proportional to 129,325.20, 178,367.50 and 84,017.68

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Solution

The fourth proportional to 129,325.20, 178,367.50 and 84,017.68 is: 115,878.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,325.20 : 178,367.50 = 84,017.68 : x
  2. Step 2: Convert to fraction form
    129,325.20/178,367.50 = 84,017.68/x
  3. Step 3: Cross multiply
    129,325.20x = 178,367.50 × 84,017.68
  4. Step 4: Simplify right side
    129,325.20x = 14,986,023,537.40
  5. Step 5: Solve for x
    x = 14,986,023,537.40/129,325.20
  6. Step 6: Final answer
    x = 115,878.60

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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.