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Finding the Fourth Proportional to 147,504.60, 221,256.90 and 121,260.60

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Solution

The fourth proportional to 147,504.60, 221,256.90 and 121,260.60 is: 181,890.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,504.60 : 221,256.90 = 121,260.60 : x
  2. Step 2: Convert to fraction form
    147,504.60/221,256.90 = 121,260.60/x
  3. Step 3: Cross multiply
    147,504.60x = 221,256.90 × 121,260.60
  4. Step 4: Simplify right side
    147,504.60x = 26,829,744,448.14
  5. Step 5: Solve for x
    x = 26,829,744,448.14/147,504.60
  6. Step 6: Final answer
    x = 181,890.90

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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.