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Finding the Fourth Proportional to 101,656.80, 140,282.28 and 56,335.44

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Solution

The fourth proportional to 101,656.80, 140,282.28 and 56,335.44 is: 77,740.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,656.80 : 140,282.28 = 56,335.44 : x
  2. Step 2: Convert to fraction form
    101,656.80/140,282.28 = 56,335.44/x
  3. Step 3: Cross multiply
    101,656.80x = 140,282.28 × 56,335.44
  4. Step 4: Simplify right side
    101,656.80x = 7,902,863,968.00
  5. Step 5: Solve for x
    x = 7,902,863,968.00/101,656.80
  6. Step 6: Final answer
    x = 77,740.63

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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.