Home / 146,379.03-201,980.10-85,138.77

Finding the Fourth Proportional to 146,379.03, 201,980.10 and 85,138.77

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Solution

The fourth proportional to 146,379.03, 201,980.10 and 85,138.77 is: 117,478.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,379.03 : 201,980.10 = 85,138.77 : x
  2. Step 2: Convert to fraction form
    146,379.03/201,980.10 = 85,138.77/x
  3. Step 3: Cross multiply
    146,379.03x = 201,980.10 × 85,138.77
  4. Step 4: Simplify right side
    146,379.03x = 17,196,337,278.48
  5. Step 5: Solve for x
    x = 17,196,337,278.48/146,379.03
  6. Step 6: Final answer
    x = 117,478.15

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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.