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Finding the Fourth Proportional to 98,420.92, 147,632.10 and 42,213.60

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Solution

The fourth proportional to 98,420.92, 147,632.10 and 42,213.60 is: 63,320.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,420.92 : 147,632.10 = 42,213.60 : x
  2. Step 2: Convert to fraction form
    98,420.92/147,632.10 = 42,213.60/x
  3. Step 3: Cross multiply
    98,420.92x = 147,632.10 × 42,213.60
  4. Step 4: Simplify right side
    98,420.92x = 6,232,082,416.56
  5. Step 5: Solve for x
    x = 6,232,082,416.56/98,420.92
  6. Step 6: Final answer
    x = 63,320.71

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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.