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Finding the Fourth Proportional to 125,390.59, 173,039.00 and 71,676.77

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Solution

The fourth proportional to 125,390.59, 173,039.00 and 71,676.77 is: 98,913.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,390.59 : 173,039.00 = 71,676.77 : x
  2. Step 2: Convert to fraction form
    125,390.59/173,039.00 = 71,676.77/x
  3. Step 3: Cross multiply
    125,390.59x = 173,039.00 × 71,676.77
  4. Step 4: Simplify right side
    125,390.59x = 12,402,875,380.45
  5. Step 5: Solve for x
    x = 12,402,875,380.45/125,390.59
  6. Step 6: Final answer
    x = 98,913.93

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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.