Home / 191,904.10-287,856.15-125,419.30

Finding the Fourth Proportional to 191,904.10, 287,856.15 and 125,419.30

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Solution

The fourth proportional to 191,904.10, 287,856.15 and 125,419.30 is: 188,128.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,904.10 : 287,856.15 = 125,419.30 : x
  2. Step 2: Convert to fraction form
    191,904.10/287,856.15 = 125,419.30/x
  3. Step 3: Cross multiply
    191,904.10x = 287,856.15 × 125,419.30
  4. Step 4: Simplify right side
    191,904.10x = 36,102,716,833.70
  5. Step 5: Solve for x
    x = 36,102,716,833.70/191,904.10
  6. Step 6: Final answer
    x = 188,128.95

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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.