Home / 129,333.04-178,510.94-86,314.75

Finding the Fourth Proportional to 129,333.04, 178,510.94 and 86,314.75

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Solution

The fourth proportional to 129,333.04, 178,510.94 and 86,314.75 is: 119,135.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,333.04 : 178,510.94 = 86,314.75 : x
  2. Step 2: Convert to fraction form
    129,333.04/178,510.94 = 86,314.75/x
  3. Step 3: Cross multiply
    129,333.04x = 178,510.94 × 86,314.75
  4. Step 4: Simplify right side
    129,333.04x = 15,408,126,604.19
  5. Step 5: Solve for x
    x = 15,408,126,604.19/129,333.04
  6. Step 6: Final answer
    x = 119,135.27

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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.