Home / 185,011.22-255,316.10-100,128.29

Finding the Fourth Proportional to 185,011.22, 255,316.10 and 100,128.29

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Solution

The fourth proportional to 185,011.22, 255,316.10 and 100,128.29 is: 138,177.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,011.22 : 255,316.10 = 100,128.29 : x
  2. Step 2: Convert to fraction form
    185,011.22/255,316.10 = 100,128.29/x
  3. Step 3: Cross multiply
    185,011.22x = 255,316.10 × 100,128.29
  4. Step 4: Simplify right side
    185,011.22x = 25,564,362,725.25
  5. Step 5: Solve for x
    x = 25,564,362,725.25/185,011.22
  6. Step 6: Final answer
    x = 138,177.37

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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.