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Finding the Fourth Proportional to 99,802.80, 149,629.32 and 60,351.84

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Solution

The fourth proportional to 99,802.80, 149,629.32 and 60,351.84 is: 90,482.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,802.80 : 149,629.32 = 60,351.84 : x
  2. Step 2: Convert to fraction form
    99,802.80/149,629.32 = 60,351.84/x
  3. Step 3: Cross multiply
    99,802.80x = 149,629.32 × 60,351.84
  4. Step 4: Simplify right side
    99,802.80x = 9,030,404,779.95
  5. Step 5: Solve for x
    x = 9,030,404,779.95/99,802.80
  6. Step 6: Final answer
    x = 90,482.48

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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.