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Finding the Fourth Proportional to 207,772.60, 286,752.62 and 136,212.92

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Solution

The fourth proportional to 207,772.60, 286,752.62 and 136,212.92 is: 187,991.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,772.60 : 286,752.62 = 136,212.92 : x
  2. Step 2: Convert to fraction form
    207,772.60/286,752.62 = 136,212.92/x
  3. Step 3: Cross multiply
    207,772.60x = 286,752.62 × 136,212.92
  4. Step 4: Simplify right side
    207,772.60x = 39,059,411,687.85
  5. Step 5: Solve for x
    x = 39,059,411,687.85/207,772.60
  6. Step 6: Final answer
    x = 187,991.16

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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.