Home / 220,020.42-330,031.89-79,775.40

Finding the Fourth Proportional to 220,020.42, 330,031.89 and 79,775.40

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Solution

The fourth proportional to 220,020.42, 330,031.89 and 79,775.40 is: 119,663.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,020.42 : 330,031.89 = 79,775.40 : x
  2. Step 2: Convert to fraction form
    220,020.42/330,031.89 = 79,775.40/x
  3. Step 3: Cross multiply
    220,020.42x = 330,031.89 × 79,775.40
  4. Step 4: Simplify right side
    220,020.42x = 26,328,426,037.51
  5. Step 5: Solve for x
    x = 26,328,426,037.51/220,020.42
  6. Step 6: Final answer
    x = 119,663.56

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1.5x scale

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.