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Finding the Fourth Proportional to 147,280.30, 221,035.65 and 68,404.30

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Solution

The fourth proportional to 147,280.30, 221,035.65 and 68,404.30 is: 102,659.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,280.30 : 221,035.65 = 68,404.30 : x
  2. Step 2: Convert to fraction form
    147,280.30/221,035.65 = 68,404.30/x
  3. Step 3: Cross multiply
    147,280.30x = 221,035.65 × 68,404.30
  4. Step 4: Simplify right side
    147,280.30x = 15,119,788,913.30
  5. Step 5: Solve for x
    x = 15,119,788,913.30/147,280.30
  6. Step 6: Final answer
    x = 102,659.95

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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.