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Finding the Fourth Proportional to 140,520.80, 210,878.40 and 101,106.20

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Solution

The fourth proportional to 140,520.80, 210,878.40 and 101,106.20 is: 151,729.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,520.80 : 210,878.40 = 101,106.20 : x
  2. Step 2: Convert to fraction form
    140,520.80/210,878.40 = 101,106.20/x
  3. Step 3: Cross multiply
    140,520.80x = 210,878.40 × 101,106.20
  4. Step 4: Simplify right side
    140,520.80x = 21,321,113,686.08
  5. Step 5: Solve for x
    x = 21,321,113,686.08/140,520.80
  6. Step 6: Final answer
    x = 151,729.24

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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.