Home / 161,910.12-242,885.52-86,927.20

Finding the Fourth Proportional to 161,910.12, 242,885.52 and 86,927.20

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Solution

The fourth proportional to 161,910.12, 242,885.52 and 86,927.20 is: 130,401.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,910.12 : 242,885.52 = 86,927.20 : x
  2. Step 2: Convert to fraction form
    161,910.12/242,885.52 = 86,927.20/x
  3. Step 3: Cross multiply
    161,910.12x = 242,885.52 × 86,927.20
  4. Step 4: Simplify right side
    161,910.12x = 21,113,358,174.14
  5. Step 5: Solve for x
    x = 21,113,358,174.14/161,910.12
  6. Step 6: Final answer
    x = 130,401.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.