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Finding the Fourth Proportional to 191,900.76, 264,824.55 and 107,019.78

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Solution

The fourth proportional to 191,900.76, 264,824.55 and 107,019.78 is: 147,688.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,900.76 : 264,824.55 = 107,019.78 : x
  2. Step 2: Convert to fraction form
    191,900.76/264,824.55 = 107,019.78/x
  3. Step 3: Cross multiply
    191,900.76x = 264,824.55 × 107,019.78
  4. Step 4: Simplify right side
    191,900.76x = 28,341,465,079.60
  5. Step 5: Solve for x
    x = 28,341,465,079.60/191,900.76
  6. Step 6: Final answer
    x = 147,688.13

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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.