Home / 98,721.40-147,984.90-48,809.20

Finding the Fourth Proportional to 98,721.40, 147,984.90 and 48,809.20

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Solution

The fourth proportional to 98,721.40, 147,984.90 and 48,809.20 is: 73,165.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,721.40 : 147,984.90 = 48,809.20 : x
  2. Step 2: Convert to fraction form
    98,721.40/147,984.90 = 48,809.20/x
  3. Step 3: Cross multiply
    98,721.40x = 147,984.90 × 48,809.20
  4. Step 4: Simplify right side
    98,721.40x = 7,223,024,581.08
  5. Step 5: Solve for x
    x = 7,223,024,581.08/98,721.40
  6. Step 6: Final answer
    x = 73,165.74

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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.