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Finding the Fourth Proportional to 131,697.95, 181,742.45 and 71,268.50

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Solution

The fourth proportional to 131,697.95, 181,742.45 and 71,268.50 is: 98,350.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,697.95 : 181,742.45 = 71,268.50 : x
  2. Step 2: Convert to fraction form
    131,697.95/181,742.45 = 71,268.50/x
  3. Step 3: Cross multiply
    131,697.95x = 181,742.45 × 71,268.50
  4. Step 4: Simplify right side
    131,697.95x = 12,952,510,532.77
  5. Step 5: Solve for x
    x = 12,952,510,532.77/131,697.95
  6. Step 6: Final answer
    x = 98,350.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.