Home / 158,938.60-219,281.77-90,018.66

Finding the Fourth Proportional to 158,938.60, 219,281.77 and 90,018.66

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Solution

The fourth proportional to 158,938.60, 219,281.77 and 90,018.66 is: 124,195.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,938.60 : 219,281.77 = 90,018.66 : x
  2. Step 2: Convert to fraction form
    158,938.60/219,281.77 = 90,018.66/x
  3. Step 3: Cross multiply
    158,938.60x = 219,281.77 × 90,018.66
  4. Step 4: Simplify right side
    158,938.60x = 19,739,451,097.83
  5. Step 5: Solve for x
    x = 19,739,451,097.83/158,938.60
  6. Step 6: Final answer
    x = 124,195.45

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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.