Home / 216,030.78-298,128.60-120,535.43

Finding the Fourth Proportional to 216,030.78, 298,128.60 and 120,535.43

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Solution

The fourth proportional to 216,030.78, 298,128.60 and 120,535.43 is: 166,342.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,030.78 : 298,128.60 = 120,535.43 : x
  2. Step 2: Convert to fraction form
    216,030.78/298,128.60 = 120,535.43/x
  3. Step 3: Cross multiply
    216,030.78x = 298,128.60 × 120,535.43
  4. Step 4: Simplify right side
    216,030.78x = 35,935,057,505.66
  5. Step 5: Solve for x
    x = 35,935,057,505.66/216,030.78
  6. Step 6: Final answer
    x = 166,342.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.