Home / 111,090.90-153,295.56-65,770.32

Finding the Fourth Proportional to 111,090.90, 153,295.56 and 65,770.32

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Solution

The fourth proportional to 111,090.90, 153,295.56 and 65,770.32 is: 90,757.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,090.90 : 153,295.56 = 65,770.32 : x
  2. Step 2: Convert to fraction form
    111,090.90/153,295.56 = 65,770.32/x
  3. Step 3: Cross multiply
    111,090.90x = 153,295.56 × 65,770.32
  4. Step 4: Simplify right side
    111,090.90x = 10,082,298,035.78
  5. Step 5: Solve for x
    x = 10,082,298,035.78/111,090.90
  6. Step 6: Final answer
    x = 90,757.19

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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.