Home / 99,389.80-149,166.30-98,612.20

Finding the Fourth Proportional to 99,389.80, 149,166.30 and 98,612.20

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Solution

The fourth proportional to 99,389.80, 149,166.30 and 98,612.20 is: 147,999.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,389.80 : 149,166.30 = 98,612.20 : x
  2. Step 2: Convert to fraction form
    99,389.80/149,166.30 = 98,612.20/x
  3. Step 3: Cross multiply
    99,389.80x = 149,166.30 × 98,612.20
  4. Step 4: Simplify right side
    99,389.80x = 14,709,617,008.86
  5. Step 5: Solve for x
    x = 14,709,617,008.86/99,389.80
  6. Step 6: Final answer
    x = 147,999.26

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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.