Home / 103,842.54-155,901.85-70,221.51

Finding the Fourth Proportional to 103,842.54, 155,901.85 and 70,221.51

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Solution

The fourth proportional to 103,842.54, 155,901.85 and 70,221.51 is: 105,425.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,842.54 : 155,901.85 = 70,221.51 : x
  2. Step 2: Convert to fraction form
    103,842.54/155,901.85 = 70,221.51/x
  3. Step 3: Cross multiply
    103,842.54x = 155,901.85 × 70,221.51
  4. Step 4: Simplify right side
    103,842.54x = 10,947,663,143.24
  5. Step 5: Solve for x
    x = 10,947,663,143.24/103,842.54
  6. Step 6: Final answer
    x = 105,425.61

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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.