Home / 98,721.83-136,224.39-55,698.81

Finding the Fourth Proportional to 98,721.83, 136,224.39 and 55,698.81

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Solution

The fourth proportional to 98,721.83, 136,224.39 and 55,698.81 is: 76,857.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,721.83 : 136,224.39 = 55,698.81 : x
  2. Step 2: Convert to fraction form
    98,721.83/136,224.39 = 55,698.81/x
  3. Step 3: Cross multiply
    98,721.83x = 136,224.39 × 55,698.81
  4. Step 4: Simplify right side
    98,721.83x = 7,587,536,624.85
  5. Step 5: Solve for x
    x = 7,587,536,624.85/98,721.83
  6. Step 6: Final answer
    x = 76,857.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.