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Finding the Fourth Proportional to 104,000.64, 155,694.78 and 64,430.52

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Solution

The fourth proportional to 104,000.64, 155,694.78 and 64,430.52 is: 96,456.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,000.64 : 155,694.78 = 64,430.52 : x
  2. Step 2: Convert to fraction form
    104,000.64/155,694.78 = 64,430.52/x
  3. Step 3: Cross multiply
    104,000.64x = 155,694.78 × 64,430.52
  4. Step 4: Simplify right side
    104,000.64x = 10,031,495,636.69
  5. Step 5: Solve for x
    x = 10,031,495,636.69/104,000.64
  6. Step 6: Final answer
    x = 96,456.10

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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.