Home / 147,438.56-221,136.06-72,538.58

Finding the Fourth Proportional to 147,438.56, 221,136.06 and 72,538.58

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Solution

The fourth proportional to 147,438.56, 221,136.06 and 72,538.58 is: 108,797.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,438.56 : 221,136.06 = 72,538.58 : x
  2. Step 2: Convert to fraction form
    147,438.56/221,136.06 = 72,538.58/x
  3. Step 3: Cross multiply
    147,438.56x = 221,136.06 × 72,538.58
  4. Step 4: Simplify right side
    147,438.56x = 16,040,895,779.19
  5. Step 5: Solve for x
    x = 16,040,895,779.19/147,438.56
  6. Step 6: Final answer
    x = 108,797.15

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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.