Home / 125,821.16-173,638.91-78,089.88

Finding the Fourth Proportional to 125,821.16, 173,638.91 and 78,089.88

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Solution

The fourth proportional to 125,821.16, 173,638.91 and 78,089.88 is: 107,767.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,821.16 : 173,638.91 = 78,089.88 : x
  2. Step 2: Convert to fraction form
    125,821.16/173,638.91 = 78,089.88/x
  3. Step 3: Cross multiply
    125,821.16x = 173,638.91 × 78,089.88
  4. Step 4: Simplify right side
    125,821.16x = 13,559,441,840.46
  5. Step 5: Solve for x
    x = 13,559,441,840.46/125,821.16
  6. Step 6: Final answer
    x = 107,767.58

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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.