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Finding the Fourth Proportional to 145,794.85, 218,752.70 and 69,854.92

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Solution

The fourth proportional to 145,794.85, 218,752.70 and 69,854.92 is: 104,811.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,794.85 : 218,752.70 = 69,854.92 : x
  2. Step 2: Convert to fraction form
    145,794.85/218,752.70 = 69,854.92/x
  3. Step 3: Cross multiply
    145,794.85x = 218,752.70 × 69,854.92
  4. Step 4: Simplify right side
    145,794.85x = 15,280,952,358.28
  5. Step 5: Solve for x
    x = 15,280,952,358.28/145,794.85
  6. Step 6: Final answer
    x = 104,811.33

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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.