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Finding the Fourth Proportional to 158,323.32, 218,486.88 and 86,703.84

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Solution

The fourth proportional to 158,323.32, 218,486.88 and 86,703.84 is: 119,651.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,323.32 : 218,486.88 = 86,703.84 : x
  2. Step 2: Convert to fraction form
    158,323.32/218,486.88 = 86,703.84/x
  3. Step 3: Cross multiply
    158,323.32x = 218,486.88 × 86,703.84
  4. Step 4: Simplify right side
    158,323.32x = 18,943,651,485.62
  5. Step 5: Solve for x
    x = 18,943,651,485.62/158,323.32
  6. Step 6: Final answer
    x = 119,651.68

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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.