Home / 153,875.70-212,311.07-90,201.20

Finding the Fourth Proportional to 153,875.70, 212,311.07 and 90,201.20

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Solution

The fourth proportional to 153,875.70, 212,311.07 and 90,201.20 is: 124,455.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,875.70 : 212,311.07 = 90,201.20 : x
  2. Step 2: Convert to fraction form
    153,875.70/212,311.07 = 90,201.20/x
  3. Step 3: Cross multiply
    153,875.70x = 212,311.07 × 90,201.20
  4. Step 4: Simplify right side
    153,875.70x = 19,150,713,287.28
  5. Step 5: Solve for x
    x = 19,150,713,287.28/153,875.70
  6. Step 6: Final answer
    x = 124,455.73

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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.