Home / 122,109.72-182,926.92-90,030.36

Finding the Fourth Proportional to 122,109.72, 182,926.92 and 90,030.36

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Solution

The fourth proportional to 122,109.72, 182,926.92 and 90,030.36 is: 134,870.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,109.72 : 182,926.92 = 90,030.36 : x
  2. Step 2: Convert to fraction form
    122,109.72/182,926.92 = 90,030.36/x
  3. Step 3: Cross multiply
    122,109.72x = 182,926.92 × 90,030.36
  4. Step 4: Simplify right side
    122,109.72x = 16,468,976,461.29
  5. Step 5: Solve for x
    x = 16,468,976,461.29/122,109.72
  6. Step 6: Final answer
    x = 134,870.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.