Home / 125,784.30-173,579.64-72,100.98

Finding the Fourth Proportional to 125,784.30, 173,579.64 and 72,100.98

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Solution

The fourth proportional to 125,784.30, 173,579.64 and 72,100.98 is: 99,497.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,784.30 : 173,579.64 = 72,100.98 : x
  2. Step 2: Convert to fraction form
    125,784.30/173,579.64 = 72,100.98/x
  3. Step 3: Cross multiply
    125,784.30x = 173,579.64 × 72,100.98
  4. Step 4: Simplify right side
    125,784.30x = 12,515,262,152.05
  5. Step 5: Solve for x
    x = 12,515,262,152.05/125,784.30
  6. Step 6: Final answer
    x = 99,497.81

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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.