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Finding the Fourth Proportional to 191,917.40, 264,846.47 and 107,039.93

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Solution

The fourth proportional to 191,917.40, 264,846.47 and 107,039.93 is: 147,715.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,917.40 : 264,846.47 = 107,039.93 : x
  2. Step 2: Convert to fraction form
    191,917.40/264,846.47 = 107,039.93/x
  3. Step 3: Cross multiply
    191,917.40x = 264,846.47 × 107,039.93
  4. Step 4: Simplify right side
    191,917.40x = 28,349,145,750.12
  5. Step 5: Solve for x
    x = 28,349,145,750.12/191,917.40
  6. Step 6: Final answer
    x = 147,715.35

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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.