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Finding the Fourth Proportional to 112,774.83, 155,609.48 and 64,354.65

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Solution

The fourth proportional to 112,774.83, 155,609.48 and 64,354.65 is: 88,798.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,774.83 : 155,609.48 = 64,354.65 : x
  2. Step 2: Convert to fraction form
    112,774.83/155,609.48 = 64,354.65/x
  3. Step 3: Cross multiply
    112,774.83x = 155,609.48 × 64,354.65
  4. Step 4: Simplify right side
    112,774.83x = 10,014,192,522.26
  5. Step 5: Solve for x
    x = 10,014,192,522.26/112,774.83
  6. Step 6: Final answer
    x = 88,798.12

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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.