Home / 98,719.40-147,981.90-48,807.20

Finding the Fourth Proportional to 98,719.40, 147,981.90 and 48,807.20

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Solution

The fourth proportional to 98,719.40, 147,981.90 and 48,807.20 is: 73,162.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,719.40 : 147,981.90 = 48,807.20 : x
  2. Step 2: Convert to fraction form
    98,719.40/147,981.90 = 48,807.20/x
  3. Step 3: Cross multiply
    98,719.40x = 147,981.90 × 48,807.20
  4. Step 4: Simplify right side
    98,719.40x = 7,222,582,189.68
  5. Step 5: Solve for x
    x = 7,222,582,189.68/98,719.40
  6. Step 6: Final answer
    x = 73,162.74

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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.