Home / 129,466.80-178,647.66-72,867.24

Finding the Fourth Proportional to 129,466.80, 178,647.66 and 72,867.24

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Solution

The fourth proportional to 129,466.80, 178,647.66 and 72,867.24 is: 100,547.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,466.80 : 178,647.66 = 72,867.24 : x
  2. Step 2: Convert to fraction form
    129,466.80/178,647.66 = 72,867.24/x
  3. Step 3: Cross multiply
    129,466.80x = 178,647.66 × 72,867.24
  4. Step 4: Simplify right side
    129,466.80x = 13,017,561,916.66
  5. Step 5: Solve for x
    x = 13,017,561,916.66/129,466.80
  6. Step 6: Final answer
    x = 100,547.49

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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.