Home / 191,500.08-286,822.36-138,788.56

Finding the Fourth Proportional to 191,500.08, 286,822.36 and 138,788.56

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Solution

The fourth proportional to 191,500.08, 286,822.36 and 138,788.56 is: 207,872.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,500.08 : 286,822.36 = 138,788.56 : x
  2. Step 2: Convert to fraction form
    191,500.08/286,822.36 = 138,788.56/x
  3. Step 3: Cross multiply
    191,500.08x = 286,822.36 × 138,788.56
  4. Step 4: Simplify right side
    191,500.08x = 39,807,662,320.20
  5. Step 5: Solve for x
    x = 39,807,662,320.20/191,500.08
  6. Step 6: Final answer
    x = 207,872.82

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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.