Home / 157,703.36-217,635.78-86,087.20

Finding the Fourth Proportional to 157,703.36, 217,635.78 and 86,087.20

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Solution

The fourth proportional to 157,703.36, 217,635.78 and 86,087.20 is: 118,803.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,703.36 : 217,635.78 = 86,087.20 : x
  2. Step 2: Convert to fraction form
    157,703.36/217,635.78 = 86,087.20/x
  3. Step 3: Cross multiply
    157,703.36x = 217,635.78 × 86,087.20
  4. Step 4: Simplify right side
    157,703.36x = 18,735,654,920.02
  5. Step 5: Solve for x
    x = 18,735,654,920.02/157,703.36
  6. Step 6: Final answer
    x = 118,803.14

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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.