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Finding the Fourth Proportional to 100,926, 139,277.88 and 56,216.88

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Solution

The fourth proportional to 100,926, 139,277.88 and 56,216.88 is: 77,579.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,926 : 139,277.88 = 56,216.88 : x
  2. Step 2: Convert to fraction form
    100,926/139,277.88 = 56,216.88/x
  3. Step 3: Cross multiply
    100,926x = 139,277.88 × 56,216.88
  4. Step 4: Simplify right side
    100,926x = 7,829,767,866.61
  5. Step 5: Solve for x
    x = 7,829,767,866.61/100,926
  6. Step 6: Final answer
    x = 77,579.29

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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.