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Finding the Fourth Proportional to 147,902.10, 221,525.10 and 128,219.10

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Solution

The fourth proportional to 147,902.10, 221,525.10 and 128,219.10 is: 192,044.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,902.10 : 221,525.10 = 128,219.10 : x
  2. Step 2: Convert to fraction form
    147,902.10/221,525.10 = 128,219.10/x
  3. Step 3: Cross multiply
    147,902.10x = 221,525.10 × 128,219.10
  4. Step 4: Simplify right side
    147,902.10x = 28,403,748,949.41
  5. Step 5: Solve for x
    x = 28,403,748,949.41/147,902.10
  6. Step 6: Final answer
    x = 192,044.26

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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.