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Finding the Fourth Proportional to 99,802.60, 149,703.90 and 89,961.10

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Solution

The fourth proportional to 99,802.60, 149,703.90 and 89,961.10 is: 134,941.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,802.60 : 149,703.90 = 89,961.10 : x
  2. Step 2: Convert to fraction form
    99,802.60/149,703.90 = 89,961.10/x
  3. Step 3: Cross multiply
    99,802.60x = 149,703.90 × 89,961.10
  4. Step 4: Simplify right side
    99,802.60x = 13,467,527,518.29
  5. Step 5: Solve for x
    x = 13,467,527,518.29/99,802.60
  6. Step 6: Final answer
    x = 134,941.65

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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.