Home / 125,898.72-173,729.62-72,171.40

Finding the Fourth Proportional to 125,898.72, 173,729.62 and 72,171.40

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Solution

The fourth proportional to 125,898.72, 173,729.62 and 72,171.40 is: 99,590.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,898.72 : 173,729.62 = 72,171.40 : x
  2. Step 2: Convert to fraction form
    125,898.72/173,729.62 = 72,171.40/x
  3. Step 3: Cross multiply
    125,898.72x = 173,729.62 × 72,171.40
  4. Step 4: Simplify right side
    125,898.72x = 12,538,309,896.87
  5. Step 5: Solve for x
    x = 12,538,309,896.87/125,898.72
  6. Step 6: Final answer
    x = 99,590.45

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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.