Home / 125,860.56-173,688-72,148.80

Finding the Fourth Proportional to 125,860.56, 173,688 and 72,148.80

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Solution

The fourth proportional to 125,860.56, 173,688 and 72,148.80 is: 99,565.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,860.56 : 173,688 = 72,148.80 : x
  2. Step 2: Convert to fraction form
    125,860.56/173,688 = 72,148.80/x
  3. Step 3: Cross multiply
    125,860.56x = 173,688 × 72,148.80
  4. Step 4: Simplify right side
    125,860.56x = 12,531,380,774.40
  5. Step 5: Solve for x
    x = 12,531,380,774.40/125,860.56
  6. Step 6: Final answer
    x = 99,565.59

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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.