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Finding the Fourth Proportional to 101,763.20, 140,433.12 and 57,051.20

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Solution

The fourth proportional to 101,763.20, 140,433.12 and 57,051.20 is: 78,730.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,763.20 : 140,433.12 = 57,051.20 : x
  2. Step 2: Convert to fraction form
    101,763.20/140,433.12 = 57,051.20/x
  3. Step 3: Cross multiply
    101,763.20x = 140,433.12 × 57,051.20
  4. Step 4: Simplify right side
    101,763.20x = 8,011,878,015.74
  5. Step 5: Solve for x
    x = 8,011,878,015.74/101,763.20
  6. Step 6: Final answer
    x = 78,730.60

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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.