Home / 129,297.77-178,427.51-71,934.18

Finding the Fourth Proportional to 129,297.77, 178,427.51 and 71,934.18

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Solution

The fourth proportional to 129,297.77, 178,427.51 and 71,934.18 is: 99,267.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,297.77 : 178,427.51 = 71,934.18 : x
  2. Step 2: Convert to fraction form
    129,297.77/178,427.51 = 71,934.18/x
  3. Step 3: Cross multiply
    129,297.77x = 178,427.51 × 71,934.18
  4. Step 4: Simplify right side
    129,297.77x = 12,835,035,862.27
  5. Step 5: Solve for x
    x = 12,835,035,862.27/129,297.77
  6. Step 6: Final answer
    x = 99,267.26

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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.