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Finding the Fourth Proportional to 101,962.80, 140,704.75 and 56,643.63

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Solution

The fourth proportional to 101,962.80, 140,704.75 and 56,643.63 is: 78,166.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,962.80 : 140,704.75 = 56,643.63 : x
  2. Step 2: Convert to fraction form
    101,962.80/140,704.75 = 56,643.63/x
  3. Step 3: Cross multiply
    101,962.80x = 140,704.75 × 56,643.63
  4. Step 4: Simplify right side
    101,962.80x = 7,970,027,656.63
  5. Step 5: Solve for x
    x = 7,970,027,656.63/101,962.80
  6. Step 6: Final answer
    x = 78,166.03

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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.