Home / 103,626.35-155,348.40-70,238.15

Finding the Fourth Proportional to 103,626.35, 155,348.40 and 70,238.15

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Solution

The fourth proportional to 103,626.35, 155,348.40 and 70,238.15 is: 105,295.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,626.35 : 155,348.40 = 70,238.15 : x
  2. Step 2: Convert to fraction form
    103,626.35/155,348.40 = 70,238.15/x
  3. Step 3: Cross multiply
    103,626.35x = 155,348.40 × 70,238.15
  4. Step 4: Simplify right side
    103,626.35x = 10,911,384,221.46
  5. Step 5: Solve for x
    x = 10,911,384,221.46/103,626.35
  6. Step 6: Final answer
    x = 105,295.46

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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.