Home / 99,475.06-149,212.79-81,907.98

Finding the Fourth Proportional to 99,475.06, 149,212.79 and 81,907.98

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Solution

The fourth proportional to 99,475.06, 149,212.79 and 81,907.98 is: 122,862.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,475.06 : 149,212.79 = 81,907.98 : x
  2. Step 2: Convert to fraction form
    99,475.06/149,212.79 = 81,907.98/x
  3. Step 3: Cross multiply
    99,475.06x = 149,212.79 × 81,907.98
  4. Step 4: Simplify right side
    99,475.06x = 12,221,717,809.52
  5. Step 5: Solve for x
    x = 12,221,717,809.52/99,475.06
  6. Step 6: Final answer
    x = 122,862.14

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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.