Home / 98,126.70-135,407.13-55,685.23

Finding the Fourth Proportional to 98,126.70, 135,407.13 and 55,685.23

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Solution

The fourth proportional to 98,126.70, 135,407.13 and 55,685.23 is: 76,841.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,126.70 : 135,407.13 = 55,685.23 : x
  2. Step 2: Convert to fraction form
    98,126.70/135,407.13 = 55,685.23/x
  3. Step 3: Cross multiply
    98,126.70x = 135,407.13 × 55,685.23
  4. Step 4: Simplify right side
    98,126.70x = 7,540,176,899.26
  5. Step 5: Solve for x
    x = 7,540,176,899.26/98,126.70
  6. Step 6: Final answer
    x = 76,841.24

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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.