Home / 147,756.42-221,570.55-81,176.58

Finding the Fourth Proportional to 147,756.42, 221,570.55 and 81,176.58

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Solution

The fourth proportional to 147,756.42, 221,570.55 and 81,176.58 is: 121,729.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,756.42 : 221,570.55 = 81,176.58 : x
  2. Step 2: Convert to fraction form
    147,756.42/221,570.55 = 81,176.58/x
  3. Step 3: Cross multiply
    147,756.42x = 221,570.55 × 81,176.58
  4. Step 4: Simplify right side
    147,756.42x = 17,986,339,477.72
  5. Step 5: Solve for x
    x = 17,986,339,477.72/147,756.42
  6. Step 6: Final answer
    x = 121,729.66

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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.