Home / 162,021.77-223,567.70-90,387.90

Finding the Fourth Proportional to 162,021.77, 223,567.70 and 90,387.90

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Solution

The fourth proportional to 162,021.77, 223,567.70 and 90,387.90 is: 124,722.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,021.77 : 223,567.70 = 90,387.90 : x
  2. Step 2: Convert to fraction form
    162,021.77/223,567.70 = 90,387.90/x
  3. Step 3: Cross multiply
    162,021.77x = 223,567.70 × 90,387.90
  4. Step 4: Simplify right side
    162,021.77x = 20,207,814,458.89
  5. Step 5: Solve for x
    x = 20,207,814,458.89/162,021.77
  6. Step 6: Final answer
    x = 124,722.84

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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.