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Finding the Fourth Proportional to 155,590.74, 214,735.66 and 87,620.98

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Solution

The fourth proportional to 155,590.74, 214,735.66 and 87,620.98 is: 120,928.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,590.74 : 214,735.66 = 87,620.98 : x
  2. Step 2: Convert to fraction form
    155,590.74/214,735.66 = 87,620.98/x
  3. Step 3: Cross multiply
    155,590.74x = 214,735.66 × 87,620.98
  4. Step 4: Simplify right side
    155,590.74x = 18,815,348,970.15
  5. Step 5: Solve for x
    x = 18,815,348,970.15/155,590.74
  6. Step 6: Final answer
    x = 120,928.46

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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.