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Finding the Fourth Proportional to 155,319.84, 214,340.40 and 88,251.84

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Solution

The fourth proportional to 155,319.84, 214,340.40 and 88,251.84 is: 121,786.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,319.84 : 214,340.40 = 88,251.84 : x
  2. Step 2: Convert to fraction form
    155,319.84/214,340.40 = 88,251.84/x
  3. Step 3: Cross multiply
    155,319.84x = 214,340.40 × 88,251.84
  4. Step 4: Simplify right side
    155,319.84x = 18,915,934,686.34
  5. Step 5: Solve for x
    x = 18,915,934,686.34/155,319.84
  6. Step 6: Final answer
    x = 121,786.98

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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.