Home / 158,405.63-218,599.76-86,788.36

Finding the Fourth Proportional to 158,405.63, 218,599.76 and 86,788.36

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Solution

The fourth proportional to 158,405.63, 218,599.76 and 86,788.36 is: 119,767.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,405.63 : 218,599.76 = 86,788.36 : x
  2. Step 2: Convert to fraction form
    158,405.63/218,599.76 = 86,788.36/x
  3. Step 3: Cross multiply
    158,405.63x = 218,599.76 × 86,788.36
  4. Step 4: Simplify right side
    158,405.63x = 18,971,915,157.01
  5. Step 5: Solve for x
    x = 18,971,915,157.01/158,405.63
  6. Step 6: Final answer
    x = 119,767.94

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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.