Home / 109,040.70-163,561.05-102,128.70

Finding the Fourth Proportional to 109,040.70, 163,561.05 and 102,128.70

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Solution

The fourth proportional to 109,040.70, 163,561.05 and 102,128.70 is: 153,193.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,040.70 : 163,561.05 = 102,128.70 : x
  2. Step 2: Convert to fraction form
    109,040.70/163,561.05 = 102,128.70/x
  3. Step 3: Cross multiply
    109,040.70x = 163,561.05 × 102,128.70
  4. Step 4: Simplify right side
    109,040.70x = 16,704,277,407.14
  5. Step 5: Solve for x
    x = 16,704,277,407.14/109,040.70
  6. Step 6: Final answer
    x = 153,193.05

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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.