Home / 122,312.17-168,719.11-76,918.15

Finding the Fourth Proportional to 122,312.17, 168,719.11 and 76,918.15

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Solution

The fourth proportional to 122,312.17, 168,719.11 and 76,918.15 is: 106,101.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,312.17 : 168,719.11 = 76,918.15 : x
  2. Step 2: Convert to fraction form
    122,312.17/168,719.11 = 76,918.15/x
  3. Step 3: Cross multiply
    122,312.17x = 168,719.11 × 76,918.15
  4. Step 4: Simplify right side
    122,312.17x = 12,977,561,810.85
  5. Step 5: Solve for x
    x = 12,977,561,810.85/122,312.17
  6. Step 6: Final answer
    x = 106,101.97

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1.5x scale

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.