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Finding the Fourth Proportional to 155,590.55, 214,762.56 and 91,074.88

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Solution

The fourth proportional to 155,590.55, 214,762.56 and 91,074.88 is: 125,711.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,590.55 : 214,762.56 = 91,074.88 : x
  2. Step 2: Convert to fraction form
    155,590.55/214,762.56 = 91,074.88/x
  3. Step 3: Cross multiply
    155,590.55x = 214,762.56 × 91,074.88
  4. Step 4: Simplify right side
    155,590.55x = 19,559,473,099.38
  5. Step 5: Solve for x
    x = 19,559,473,099.38/155,590.55
  6. Step 6: Final answer
    x = 125,711.19

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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.