Home / 151,021.41-208,410.35-83,042.78

Finding the Fourth Proportional to 151,021.41, 208,410.35 and 83,042.78

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Solution

The fourth proportional to 151,021.41, 208,410.35 and 83,042.78 is: 114,599.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,021.41 : 208,410.35 = 83,042.78 : x
  2. Step 2: Convert to fraction form
    151,021.41/208,410.35 = 83,042.78/x
  3. Step 3: Cross multiply
    151,021.41x = 208,410.35 × 83,042.78
  4. Step 4: Simplify right side
    151,021.41x = 17,306,973,387.51
  5. Step 5: Solve for x
    x = 17,306,973,387.51/151,021.41
  6. Step 6: Final answer
    x = 114,599.47

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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.