Home / 151,021.72-208,420.80-90,594.88

Finding the Fourth Proportional to 151,021.72, 208,420.80 and 90,594.88

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Solution

The fourth proportional to 151,021.72, 208,420.80 and 90,594.88 is: 125,027.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,021.72 : 208,420.80 = 90,594.88 : x
  2. Step 2: Convert to fraction form
    151,021.72/208,420.80 = 90,594.88/x
  3. Step 3: Cross multiply
    151,021.72x = 208,420.80 × 90,594.88
  4. Step 4: Simplify right side
    151,021.72x = 18,881,857,365.50
  5. Step 5: Solve for x
    x = 18,881,857,365.50/151,021.72
  6. Step 6: Final answer
    x = 125,027.43

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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.