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Finding the Fourth Proportional to 158,525.57, 218,762.78 and 86,906.08

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Solution

The fourth proportional to 158,525.57, 218,762.78 and 86,906.08 is: 119,929.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,525.57 : 218,762.78 = 86,906.08 : x
  2. Step 2: Convert to fraction form
    158,525.57/218,762.78 = 86,906.08/x
  3. Step 3: Cross multiply
    158,525.57x = 218,762.78 × 86,906.08
  4. Step 4: Simplify right side
    158,525.57x = 19,011,815,498.63
  5. Step 5: Solve for x
    x = 19,011,815,498.63/158,525.57
  6. Step 6: Final answer
    x = 119,929.01

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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.