Home / 109,515.21-151,095.58-61,109.31

Finding the Fourth Proportional to 109,515.21, 151,095.58 and 61,109.31

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Solution

The fourth proportional to 109,515.21, 151,095.58 and 61,109.31 is: 84,311.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,515.21 : 151,095.58 = 61,109.31 : x
  2. Step 2: Convert to fraction form
    109,515.21/151,095.58 = 61,109.31/x
  3. Step 3: Cross multiply
    109,515.21x = 151,095.58 × 61,109.31
  4. Step 4: Simplify right side
    109,515.21x = 9,233,346,637.85
  5. Step 5: Solve for x
    x = 9,233,346,637.85/109,515.21
  6. Step 6: Final answer
    x = 84,311.09

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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.