Home / 158,712.42-219,023.02-90,730.89

Finding the Fourth Proportional to 158,712.42, 219,023.02 and 90,730.89

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Solution

The fourth proportional to 158,712.42, 219,023.02 and 90,730.89 is: 125,208.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,712.42 : 219,023.02 = 90,730.89 : x
  2. Step 2: Convert to fraction form
    158,712.42/219,023.02 = 90,730.89/x
  3. Step 3: Cross multiply
    158,712.42x = 219,023.02 × 90,730.89
  4. Step 4: Simplify right side
    158,712.42x = 19,872,153,535.09
  5. Step 5: Solve for x
    x = 19,872,153,535.09/158,712.42
  6. Step 6: Final answer
    x = 125,208.56

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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.