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Finding the Fourth Proportional to 163,978.60, 245,967.90 and 147,908.20

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Solution

The fourth proportional to 163,978.60, 245,967.90 and 147,908.20 is: 221,862.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,978.60 : 245,967.90 = 147,908.20 : x
  2. Step 2: Convert to fraction form
    163,978.60/245,967.90 = 147,908.20/x
  3. Step 3: Cross multiply
    163,978.60x = 245,967.90 × 147,908.20
  4. Step 4: Simplify right side
    163,978.60x = 36,380,669,346.78
  5. Step 5: Solve for x
    x = 36,380,669,346.78/163,978.60
  6. Step 6: Final answer
    x = 221,862.30

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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.