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Finding the Fourth Proportional to 191,385.20, 264,110.28 and 105,349.28

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Solution

The fourth proportional to 191,385.20, 264,110.28 and 105,349.28 is: 145,381.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,385.20 : 264,110.28 = 105,349.28 : x
  2. Step 2: Convert to fraction form
    191,385.20/264,110.28 = 105,349.28/x
  3. Step 3: Cross multiply
    191,385.20x = 264,110.28 × 105,349.28
  4. Step 4: Simplify right side
    191,385.20x = 27,823,827,838.60
  5. Step 5: Solve for x
    x = 27,823,827,838.60/191,385.20
  6. Step 6: Final answer
    x = 145,381.29

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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.