Home / 97,984.36-135,186.39-57,139.22

Finding the Fourth Proportional to 97,984.36, 135,186.39 and 57,139.22

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Solution

The fourth proportional to 97,984.36, 135,186.39 and 57,139.22 is: 78,833.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,984.36 : 135,186.39 = 57,139.22 : x
  2. Step 2: Convert to fraction form
    97,984.36/135,186.39 = 57,139.22/x
  3. Step 3: Cross multiply
    97,984.36x = 135,186.39 × 57,139.22
  4. Step 4: Simplify right side
    97,984.36x = 7,724,445,377.89
  5. Step 5: Solve for x
    x = 7,724,445,377.89/97,984.36
  6. Step 6: Final answer
    x = 78,833.45

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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.