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Finding the Fourth Proportional to 191,060.40, 286,153.60 and 91,290.68

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Solution

The fourth proportional to 191,060.40, 286,153.60 and 91,290.68 is: 136,727.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,060.40 : 286,153.60 = 91,290.68 : x
  2. Step 2: Convert to fraction form
    191,060.40/286,153.60 = 91,290.68/x
  3. Step 3: Cross multiply
    191,060.40x = 286,153.60 × 91,290.68
  4. Step 4: Simplify right side
    191,060.40x = 26,123,156,728.45
  5. Step 5: Solve for x
    x = 26,123,156,728.45/191,060.40
  6. Step 6: Final answer
    x = 136,727.22

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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.