Home / 140,905.10-211,386.45-47,420.30

Finding the Fourth Proportional to 140,905.10, 211,386.45 and 47,420.30

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Solution

The fourth proportional to 140,905.10, 211,386.45 and 47,420.30 is: 71,140.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,905.10 : 211,386.45 = 47,420.30 : x
  2. Step 2: Convert to fraction form
    140,905.10/211,386.45 = 47,420.30/x
  3. Step 3: Cross multiply
    140,905.10x = 211,386.45 × 47,420.30
  4. Step 4: Simplify right side
    140,905.10x = 10,024,008,874.94
  5. Step 5: Solve for x
    x = 10,024,008,874.94/140,905.10
  6. Step 6: Final answer
    x = 71,140.14

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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.