Home / 153,490.46-229,810.56-78,449.01

Finding the Fourth Proportional to 153,490.46, 229,810.56 and 78,449.01

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Solution

The fourth proportional to 153,490.46, 229,810.56 and 78,449.01 is: 117,456.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,490.46 : 229,810.56 = 78,449.01 : x
  2. Step 2: Convert to fraction form
    153,490.46/229,810.56 = 78,449.01/x
  3. Step 3: Cross multiply
    153,490.46x = 229,810.56 × 78,449.01
  4. Step 4: Simplify right side
    153,490.46x = 18,028,410,919.55
  5. Step 5: Solve for x
    x = 18,028,410,919.55/153,490.46
  6. Step 6: Final answer
    x = 117,456.23

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1.5x scale

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.