Home / 101,929.10-140,666.82-56,607.28

Finding the Fourth Proportional to 101,929.10, 140,666.82 and 56,607.28

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Solution

The fourth proportional to 101,929.10, 140,666.82 and 56,607.28 is: 78,120.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,929.10 : 140,666.82 = 56,607.28 : x
  2. Step 2: Convert to fraction form
    101,929.10/140,666.82 = 56,607.28/x
  3. Step 3: Cross multiply
    101,929.10x = 140,666.82 × 56,607.28
  4. Step 4: Simplify right side
    101,929.10x = 7,962,765,820.92
  5. Step 5: Solve for x
    x = 7,962,765,820.92/101,929.10
  6. Step 6: Final answer
    x = 78,120.64

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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.