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Finding the Fourth Proportional to 155,650.59, 214,795.53 and 87,667.70

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Solution

The fourth proportional to 155,650.59, 214,795.53 and 87,667.70 is: 120,980.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,650.59 : 214,795.53 = 87,667.70 : x
  2. Step 2: Convert to fraction form
    155,650.59/214,795.53 = 87,667.70/x
  3. Step 3: Cross multiply
    155,650.59x = 214,795.53 × 87,667.70
  4. Step 4: Simplify right side
    155,650.59x = 18,830,629,011.40
  5. Step 5: Solve for x
    x = 18,830,629,011.40/155,650.59
  6. Step 6: Final answer
    x = 120,980.13

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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.