Home / 103,628.06-155,444.72-77,498.68

Finding the Fourth Proportional to 103,628.06, 155,444.72 and 77,498.68

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Solution

The fourth proportional to 103,628.06, 155,444.72 and 77,498.68 is: 116,249.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,628.06 : 155,444.72 = 77,498.68 : x
  2. Step 2: Convert to fraction form
    103,628.06/155,444.72 = 77,498.68/x
  3. Step 3: Cross multiply
    103,628.06x = 155,444.72 × 77,498.68
  4. Step 4: Simplify right side
    103,628.06x = 12,046,760,612.97
  5. Step 5: Solve for x
    x = 12,046,760,612.97/103,628.06
  6. Step 6: Final answer
    x = 116,249.99

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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.