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Finding the Fourth Proportional to 158,397.92, 218,556.36 and 90,437.01

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Solution

The fourth proportional to 158,397.92, 218,556.36 and 90,437.01 is: 124,784.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,397.92 : 218,556.36 = 90,437.01 : x
  2. Step 2: Convert to fraction form
    158,397.92/218,556.36 = 90,437.01/x
  3. Step 3: Cross multiply
    158,397.92x = 218,556.36 × 90,437.01
  4. Step 4: Simplify right side
    158,397.92x = 19,765,583,276.83
  5. Step 5: Solve for x
    x = 19,765,583,276.83/158,397.92
  6. Step 6: Final answer
    x = 124,784.36

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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.