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Finding the Fourth Proportional to 118,668.16, 163,809.30 and 77,847.85

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Solution

The fourth proportional to 118,668.16, 163,809.30 and 77,847.85 is: 107,461.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,668.16 : 163,809.30 = 77,847.85 : x
  2. Step 2: Convert to fraction form
    118,668.16/163,809.30 = 77,847.85/x
  3. Step 3: Cross multiply
    118,668.16x = 163,809.30 × 77,847.85
  4. Step 4: Simplify right side
    118,668.16x = 12,752,201,815.01
  5. Step 5: Solve for x
    x = 12,752,201,815.01/118,668.16
  6. Step 6: Final answer
    x = 107,461.02

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1.5x scale

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.