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Finding the Fourth Proportional to 153,975.40, 230,963.10 and 87,620.20

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Solution

The fourth proportional to 153,975.40, 230,963.10 and 87,620.20 is: 131,430.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,975.40 : 230,963.10 = 87,620.20 : x
  2. Step 2: Convert to fraction form
    153,975.40/230,963.10 = 87,620.20/x
  3. Step 3: Cross multiply
    153,975.40x = 230,963.10 × 87,620.20
  4. Step 4: Simplify right side
    153,975.40x = 20,237,033,014.62
  5. Step 5: Solve for x
    x = 20,237,033,014.62/153,975.40
  6. Step 6: Final answer
    x = 131,430.30

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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.