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Finding the Fourth Proportional to 155,671.88, 214,814.43 and 87,667.11

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Solution

The fourth proportional to 155,671.88, 214,814.43 and 87,667.11 is: 120,973.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,671.88 : 214,814.43 = 87,667.11 : x
  2. Step 2: Convert to fraction form
    155,671.88/214,814.43 = 87,667.11/x
  3. Step 3: Cross multiply
    155,671.88x = 214,814.43 × 87,667.11
  4. Step 4: Simplify right side
    155,671.88x = 18,832,160,264.40
  5. Step 5: Solve for x
    x = 18,832,160,264.40/155,671.88
  6. Step 6: Final answer
    x = 120,973.43

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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.