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Finding the Fourth Proportional to 177,420.60, 266,130.90 and 121,433.40

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Solution

The fourth proportional to 177,420.60, 266,130.90 and 121,433.40 is: 182,150.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,420.60 : 266,130.90 = 121,433.40 : x
  2. Step 2: Convert to fraction form
    177,420.60/266,130.90 = 121,433.40/x
  3. Step 3: Cross multiply
    177,420.60x = 266,130.90 × 121,433.40
  4. Step 4: Simplify right side
    177,420.60x = 32,317,180,032.06
  5. Step 5: Solve for x
    x = 32,317,180,032.06/177,420.60
  6. Step 6: Final answer
    x = 182,150.10

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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.