Home / 129,277.83-178,256.32-91,025.15

Finding the Fourth Proportional to 129,277.83, 178,256.32 and 91,025.15

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Solution

The fourth proportional to 129,277.83, 178,256.32 and 91,025.15 is: 125,511.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,277.83 : 178,256.32 = 91,025.15 : x
  2. Step 2: Convert to fraction form
    129,277.83/178,256.32 = 91,025.15/x
  3. Step 3: Cross multiply
    129,277.83x = 178,256.32 × 91,025.15
  4. Step 4: Simplify right side
    129,277.83x = 16,225,808,484.53
  5. Step 5: Solve for x
    x = 16,225,808,484.53/129,277.83
  6. Step 6: Final answer
    x = 125,511.15

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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.