Home / 125,856.10-188,784.15-121,017.70

Finding the Fourth Proportional to 125,856.10, 188,784.15 and 121,017.70

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Solution

The fourth proportional to 125,856.10, 188,784.15 and 121,017.70 is: 181,526.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,856.10 : 188,784.15 = 121,017.70 : x
  2. Step 2: Convert to fraction form
    125,856.10/188,784.15 = 121,017.70/x
  3. Step 3: Cross multiply
    125,856.10x = 188,784.15 × 121,017.70
  4. Step 4: Simplify right side
    125,856.10x = 22,846,223,629.46
  5. Step 5: Solve for x
    x = 22,846,223,629.46/125,856.10
  6. Step 6: Final answer
    x = 181,526.55

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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.