Home / 153,929.68-212,454.60-90,300.88

Finding the Fourth Proportional to 153,929.68, 212,454.60 and 90,300.88

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Solution

The fourth proportional to 153,929.68, 212,454.60 and 90,300.88 is: 124,633.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,929.68 : 212,454.60 = 90,300.88 : x
  2. Step 2: Convert to fraction form
    153,929.68/212,454.60 = 90,300.88/x
  3. Step 3: Cross multiply
    153,929.68x = 212,454.60 × 90,300.88
  4. Step 4: Simplify right side
    153,929.68x = 19,184,837,340.05
  5. Step 5: Solve for x
    x = 19,184,837,340.05/153,929.68
  6. Step 6: Final answer
    x = 124,633.78

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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.