Home / 125,783.15-173,580.75-72,099.31

Finding the Fourth Proportional to 125,783.15, 173,580.75 and 72,099.31

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Solution

The fourth proportional to 125,783.15, 173,580.75 and 72,099.31 is: 99,497.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,783.15 : 173,580.75 = 72,099.31 : x
  2. Step 2: Convert to fraction form
    125,783.15/173,580.75 = 72,099.31/x
  3. Step 3: Cross multiply
    125,783.15x = 173,580.75 × 72,099.31
  4. Step 4: Simplify right side
    125,783.15x = 12,515,051,870.33
  5. Step 5: Solve for x
    x = 12,515,051,870.33/125,783.15
  6. Step 6: Final answer
    x = 99,497.04

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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.