Home / 161,901.20-223,396.80-90,279.20

Finding the Fourth Proportional to 161,901.20, 223,396.80 and 90,279.20

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Solution

The fourth proportional to 161,901.20, 223,396.80 and 90,279.20 is: 124,570.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,901.20 : 223,396.80 = 90,279.20 : x
  2. Step 2: Convert to fraction form
    161,901.20/223,396.80 = 90,279.20/x
  3. Step 3: Cross multiply
    161,901.20x = 223,396.80 × 90,279.20
  4. Step 4: Simplify right side
    161,901.20x = 20,168,084,386.56
  5. Step 5: Solve for x
    x = 20,168,084,386.56/161,901.20
  6. Step 6: Final answer
    x = 124,570.32

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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.