Home / 101,968.19-140,712.04-56,643.98

Finding the Fourth Proportional to 101,968.19, 140,712.04 and 56,643.98

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Solution

The fourth proportional to 101,968.19, 140,712.04 and 56,643.98 is: 78,166.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,968.19 : 140,712.04 = 56,643.98 : x
  2. Step 2: Convert to fraction form
    101,968.19/140,712.04 = 56,643.98/x
  3. Step 3: Cross multiply
    101,968.19x = 140,712.04 × 56,643.98
  4. Step 4: Simplify right side
    101,968.19x = 7,970,490,215.40
  5. Step 5: Solve for x
    x = 7,970,490,215.40/101,968.19
  6. Step 6: Final answer
    x = 78,166.44

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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.