Home / 102,156.84-140,977.73-56,221.77

Finding the Fourth Proportional to 102,156.84, 140,977.73 and 56,221.77

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Solution

The fourth proportional to 102,156.84, 140,977.73 and 56,221.77 is: 77,586.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,156.84 : 140,977.73 = 56,221.77 : x
  2. Step 2: Convert to fraction form
    102,156.84/140,977.73 = 56,221.77/x
  3. Step 3: Cross multiply
    102,156.84x = 140,977.73 × 56,221.77
  4. Step 4: Simplify right side
    102,156.84x = 7,926,017,511.18
  5. Step 5: Solve for x
    x = 7,926,017,511.18/102,156.84
  6. Step 6: Final answer
    x = 77,586.75

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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.