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Finding the Fourth Proportional to 155,497.51, 214,593.47 and 87,518.89

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Solution

The fourth proportional to 155,497.51, 214,593.47 and 87,518.89 is: 120,779.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,497.51 : 214,593.47 = 87,518.89 : x
  2. Step 2: Convert to fraction form
    155,497.51/214,593.47 = 87,518.89/x
  3. Step 3: Cross multiply
    155,497.51x = 214,593.47 × 87,518.89
  4. Step 4: Simplify right side
    155,497.51x = 18,780,982,295.65
  5. Step 5: Solve for x
    x = 18,780,982,295.65/155,497.51
  6. Step 6: Final answer
    x = 120,779.96

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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.