Home / 99,136.58-148,705.08-69,686.20

Finding the Fourth Proportional to 99,136.58, 148,705.08 and 69,686.20

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Solution

The fourth proportional to 99,136.58, 148,705.08 and 69,686.20 is: 104,529.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,136.58 : 148,705.08 = 69,686.20 : x
  2. Step 2: Convert to fraction form
    99,136.58/148,705.08 = 69,686.20/x
  3. Step 3: Cross multiply
    99,136.58x = 148,705.08 × 69,686.20
  4. Step 4: Simplify right side
    99,136.58x = 10,362,691,945.90
  5. Step 5: Solve for x
    x = 10,362,691,945.90/99,136.58
  6. Step 6: Final answer
    x = 104,529.45

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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.