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Finding the Fourth Proportional to 147,998.60, 221,997.90 and 103,675.40

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Solution

The fourth proportional to 147,998.60, 221,997.90 and 103,675.40 is: 155,513.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,998.60 : 221,997.90 = 103,675.40 : x
  2. Step 2: Convert to fraction form
    147,998.60/221,997.90 = 103,675.40/x
  3. Step 3: Cross multiply
    147,998.60x = 221,997.90 × 103,675.40
  4. Step 4: Simplify right side
    147,998.60x = 23,015,721,081.66
  5. Step 5: Solve for x
    x = 23,015,721,081.66/147,998.60
  6. Step 6: Final answer
    x = 155,513.10

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1.5x scale

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.