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Finding the Fourth Proportional to 153,813.80, 230,907.90 and 87,300.20

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Solution

The fourth proportional to 153,813.80, 230,907.90 and 87,300.20 is: 131,056.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,813.80 : 230,907.90 = 87,300.20 : x
  2. Step 2: Convert to fraction form
    153,813.80/230,907.90 = 87,300.20/x
  3. Step 3: Cross multiply
    153,813.80x = 230,907.90 × 87,300.20
  4. Step 4: Simplify right side
    153,813.80x = 20,158,305,851.58
  5. Step 5: Solve for x
    x = 20,158,305,851.58/153,813.80
  6. Step 6: Final answer
    x = 131,056.55

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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.