Home / 129,569.29-178,744.53-75,821.34

Finding the Fourth Proportional to 129,569.29, 178,744.53 and 75,821.34

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Solution

The fourth proportional to 129,569.29, 178,744.53 and 75,821.34 is: 104,597.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,569.29 : 178,744.53 = 75,821.34 : x
  2. Step 2: Convert to fraction form
    129,569.29/178,744.53 = 75,821.34/x
  3. Step 3: Cross multiply
    129,569.29x = 178,744.53 × 75,821.34
  4. Step 4: Simplify right side
    129,569.29x = 13,552,649,782.27
  5. Step 5: Solve for x
    x = 13,552,649,782.27/129,569.29
  6. Step 6: Final answer
    x = 104,597.70

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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.