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Finding the Fourth Proportional to 101,962.53, 140,730.80 and 56,656.08

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Solution

The fourth proportional to 101,962.53, 140,730.80 and 56,656.08 is: 78,197.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,962.53 : 140,730.80 = 56,656.08 : x
  2. Step 2: Convert to fraction form
    101,962.53/140,730.80 = 56,656.08/x
  3. Step 3: Cross multiply
    101,962.53x = 140,730.80 × 56,656.08
  4. Step 4: Simplify right side
    101,962.53x = 7,973,255,179.98
  5. Step 5: Solve for x
    x = 7,973,255,179.98/101,962.53
  6. Step 6: Final answer
    x = 78,197.89

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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.