Home / 124,874.90-172,328.28-70,427.78

Finding the Fourth Proportional to 124,874.90, 172,328.28 and 70,427.78

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Solution

The fourth proportional to 124,874.90, 172,328.28 and 70,427.78 is: 97,190.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,874.90 : 172,328.28 = 70,427.78 : x
  2. Step 2: Convert to fraction form
    124,874.90/172,328.28 = 70,427.78/x
  3. Step 3: Cross multiply
    124,874.90x = 172,328.28 × 70,427.78
  4. Step 4: Simplify right side
    124,874.90x = 12,136,698,191.62
  5. Step 5: Solve for x
    x = 12,136,698,191.62/124,874.90
  6. Step 6: Final answer
    x = 97,190.85

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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.