Home / 161,641.48-223,072.16-90,021.50

Finding the Fourth Proportional to 161,641.48, 223,072.16 and 90,021.50

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Solution

The fourth proportional to 161,641.48, 223,072.16 and 90,021.50 is: 124,233.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,641.48 : 223,072.16 = 90,021.50 : x
  2. Step 2: Convert to fraction form
    161,641.48/223,072.16 = 90,021.50/x
  3. Step 3: Cross multiply
    161,641.48x = 223,072.16 × 90,021.50
  4. Step 4: Simplify right side
    161,641.48x = 20,081,290,451.44
  5. Step 5: Solve for x
    x = 20,081,290,451.44/161,641.48
  6. Step 6: Final answer
    x = 124,233.52

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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.