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Finding the Fourth Proportional to 155,320.71, 214,414.79 and 117,095.79

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Solution

The fourth proportional to 155,320.71, 214,414.79 and 117,095.79 is: 161,646.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,320.71 : 214,414.79 = 117,095.79 : x
  2. Step 2: Convert to fraction form
    155,320.71/214,414.79 = 117,095.79/x
  3. Step 3: Cross multiply
    155,320.71x = 214,414.79 × 117,095.79
  4. Step 4: Simplify right side
    155,320.71x = 25,107,069,222.73
  5. Step 5: Solve for x
    x = 25,107,069,222.73/155,320.71
  6. Step 6: Final answer
    x = 161,646.63

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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.