Home / 151,206.75-208,665.32-84,138.75

Finding the Fourth Proportional to 151,206.75, 208,665.32 and 84,138.75

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Solution

The fourth proportional to 151,206.75, 208,665.32 and 84,138.75 is: 116,111.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,206.75 : 208,665.32 = 84,138.75 : x
  2. Step 2: Convert to fraction form
    151,206.75/208,665.32 = 84,138.75/x
  3. Step 3: Cross multiply
    151,206.75x = 208,665.32 × 84,138.75
  4. Step 4: Simplify right side
    151,206.75x = 17,556,838,772.46
  5. Step 5: Solve for x
    x = 17,556,838,772.46/151,206.75
  6. Step 6: Final answer
    x = 116,111.48

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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.