Home / 109,431.10-151,004.45-69,130.16

Finding the Fourth Proportional to 109,431.10, 151,004.45 and 69,130.16

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Solution

The fourth proportional to 109,431.10, 151,004.45 and 69,130.16 is: 95,393.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,431.10 : 151,004.45 = 69,130.16 : x
  2. Step 2: Convert to fraction form
    109,431.10/151,004.45 = 69,130.16/x
  3. Step 3: Cross multiply
    109,431.10x = 151,004.45 × 69,130.16
  4. Step 4: Simplify right side
    109,431.10x = 10,438,961,773.28
  5. Step 5: Solve for x
    x = 10,438,961,773.28/109,431.10
  6. Step 6: Final answer
    x = 95,393.01

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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.