Home / 129,622.19-178,960.19-99,350.46

Finding the Fourth Proportional to 129,622.19, 178,960.19 and 99,350.46

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Solution

The fourth proportional to 129,622.19, 178,960.19 and 99,350.46 is: 137,166.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,622.19 : 178,960.19 = 99,350.46 : x
  2. Step 2: Convert to fraction form
    129,622.19/178,960.19 = 99,350.46/x
  3. Step 3: Cross multiply
    129,622.19x = 178,960.19 × 99,350.46
  4. Step 4: Simplify right side
    129,622.19x = 17,779,776,701.44
  5. Step 5: Solve for x
    x = 17,779,776,701.44/129,622.19
  6. Step 6: Final answer
    x = 137,166.15

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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.