Home / 191,478.06-286,789.41-138,766.50

Finding the Fourth Proportional to 191,478.06, 286,789.41 and 138,766.50

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Solution

The fourth proportional to 191,478.06, 286,789.41 and 138,766.50 is: 207,839.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,478.06 : 286,789.41 = 138,766.50 : x
  2. Step 2: Convert to fraction form
    191,478.06/286,789.41 = 138,766.50/x
  3. Step 3: Cross multiply
    191,478.06x = 286,789.41 × 138,766.50
  4. Step 4: Simplify right side
    191,478.06x = 39,796,762,662.77
  5. Step 5: Solve for x
    x = 39,796,762,662.77/191,478.06
  6. Step 6: Final answer
    x = 207,839.81

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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.