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Finding the Fourth Proportional to 145,987.40, 218,981.10 and 114,494.60

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Solution

The fourth proportional to 145,987.40, 218,981.10 and 114,494.60 is: 171,741.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,987.40 : 218,981.10 = 114,494.60 : x
  2. Step 2: Convert to fraction form
    145,987.40/218,981.10 = 114,494.60/x
  3. Step 3: Cross multiply
    145,987.40x = 218,981.10 × 114,494.60
  4. Step 4: Simplify right side
    145,987.40x = 25,072,153,452.06
  5. Step 5: Solve for x
    x = 25,072,153,452.06/145,987.40
  6. Step 6: Final answer
    x = 171,741.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.