Home / 109,138.84-163,707.54-28,085.74

Finding the Fourth Proportional to 109,138.84, 163,707.54 and 28,085.74

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Solution

The fourth proportional to 109,138.84, 163,707.54 and 28,085.74 is: 42,128.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,138.84 : 163,707.54 = 28,085.74 : x
  2. Step 2: Convert to fraction form
    109,138.84/163,707.54 = 28,085.74/x
  3. Step 3: Cross multiply
    109,138.84x = 163,707.54 × 28,085.74
  4. Step 4: Simplify right side
    109,138.84x = 4,597,847,404.48
  5. Step 5: Solve for x
    x = 4,597,847,404.48/109,138.84
  6. Step 6: Final answer
    x = 42,128.42

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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.