Home / 158,506.61-218,740.07-86,886.41

Finding the Fourth Proportional to 158,506.61, 218,740.07 and 86,886.41

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Solution

The fourth proportional to 158,506.61, 218,740.07 and 86,886.41 is: 119,903.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,506.61 : 218,740.07 = 86,886.41 : x
  2. Step 2: Convert to fraction form
    158,506.61/218,740.07 = 86,886.41/x
  3. Step 3: Cross multiply
    158,506.61x = 218,740.07 × 86,886.41
  4. Step 4: Simplify right side
    158,506.61x = 19,005,538,528.96
  5. Step 5: Solve for x
    x = 19,005,538,528.96/158,506.61
  6. Step 6: Final answer
    x = 119,903.76

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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.