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Finding the Fourth Proportional to 155,495.94, 214,575.51 and 87,515.74

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Solution

The fourth proportional to 155,495.94, 214,575.51 and 87,515.74 is: 120,766.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,495.94 : 214,575.51 = 87,515.74 : x
  2. Step 2: Convert to fraction form
    155,495.94/214,575.51 = 87,515.74/x
  3. Step 3: Cross multiply
    155,495.94x = 214,575.51 × 87,515.74
  4. Step 4: Simplify right side
    155,495.94x = 18,778,734,543.53
  5. Step 5: Solve for x
    x = 18,778,734,543.53/155,495.94
  6. Step 6: Final answer
    x = 120,766.72

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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.