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Finding the Fourth Proportional to 191,365.96, 286,862.70 and 91,500.28

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Solution

The fourth proportional to 191,365.96, 286,862.70 and 91,500.28 is: 137,161.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,365.96 : 286,862.70 = 91,500.28 : x
  2. Step 2: Convert to fraction form
    191,365.96/286,862.70 = 91,500.28/x
  3. Step 3: Cross multiply
    191,365.96x = 286,862.70 × 91,500.28
  4. Step 4: Simplify right side
    191,365.96x = 26,248,017,371.56
  5. Step 5: Solve for x
    x = 26,248,017,371.56/191,365.96
  6. Step 6: Final answer
    x = 137,161.37

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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.