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Finding the Fourth Proportional to 211,602.76, 292,011.84 and 120,960.72

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Solution

The fourth proportional to 211,602.76, 292,011.84 and 120,960.72 is: 166,925.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,602.76 : 292,011.84 = 120,960.72 : x
  2. Step 2: Convert to fraction form
    211,602.76/292,011.84 = 120,960.72/x
  3. Step 3: Cross multiply
    211,602.76x = 292,011.84 × 120,960.72
  4. Step 4: Simplify right side
    211,602.76x = 35,321,962,414.92
  5. Step 5: Solve for x
    x = 35,321,962,414.92/211,602.76
  6. Step 6: Final answer
    x = 166,925.81

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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.