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Finding the Fourth Proportional to 158,360.85, 218,483.73 and 90,328.68

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Solution

The fourth proportional to 158,360.85, 218,483.73 and 90,328.68 is: 124,622.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,360.85 : 218,483.73 = 90,328.68 : x
  2. Step 2: Convert to fraction form
    158,360.85/218,483.73 = 90,328.68/x
  3. Step 3: Cross multiply
    158,360.85x = 218,483.73 × 90,328.68
  4. Step 4: Simplify right side
    158,360.85x = 19,735,346,932.38
  5. Step 5: Solve for x
    x = 19,735,346,932.38/158,360.85
  6. Step 6: Final answer
    x = 124,622.64

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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.