Home / 191,214.15-286,821.23-128,228.55

Finding the Fourth Proportional to 191,214.15, 286,821.23 and 128,228.55

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Solution

The fourth proportional to 191,214.15, 286,821.23 and 128,228.55 is: 192,342.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,214.15 : 286,821.23 = 128,228.55 : x
  2. Step 2: Convert to fraction form
    191,214.15/286,821.23 = 128,228.55/x
  3. Step 3: Cross multiply
    191,214.15x = 286,821.23 × 128,228.55
  4. Step 4: Simplify right side
    191,214.15x = 36,778,669,790.97
  5. Step 5: Solve for x
    x = 36,778,669,790.97/191,214.15
  6. Step 6: Final answer
    x = 192,342.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.