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Finding the Fourth Proportional to 155,465.60, 214,543.44 and 87,483.71

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Solution

The fourth proportional to 155,465.60, 214,543.44 and 87,483.71 is: 120,728.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,465.60 : 214,543.44 = 87,483.71 : x
  2. Step 2: Convert to fraction form
    155,465.60/214,543.44 = 87,483.71/x
  3. Step 3: Cross multiply
    155,465.60x = 214,543.44 × 87,483.71
  4. Step 4: Simplify right side
    155,465.60x = 18,769,055,014.65
  5. Step 5: Solve for x
    x = 18,769,055,014.65/155,465.60
  6. Step 6: Final answer
    x = 120,728.03

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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.