Home / 109,720.10-151,405.53-61,973.30

Finding the Fourth Proportional to 109,720.10, 151,405.53 and 61,973.30

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Solution

The fourth proportional to 109,720.10, 151,405.53 and 61,973.30 is: 85,518.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,720.10 : 151,405.53 = 61,973.30 : x
  2. Step 2: Convert to fraction form
    109,720.10/151,405.53 = 61,973.30/x
  3. Step 3: Cross multiply
    109,720.10x = 151,405.53 × 61,973.30
  4. Step 4: Simplify right side
    109,720.10x = 9,383,100,332.35
  5. Step 5: Solve for x
    x = 9,383,100,332.35/109,720.10
  6. Step 6: Final answer
    x = 85,518.52

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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.