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Finding the Fourth Proportional to 109,509.34, 151,116.72 and 61,759.84

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Solution

The fourth proportional to 109,509.34, 151,116.72 and 61,759.84 is: 85,225.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,509.34 : 151,116.72 = 61,759.84 : x
  2. Step 2: Convert to fraction form
    109,509.34/151,116.72 = 61,759.84/x
  3. Step 3: Cross multiply
    109,509.34x = 151,116.72 × 61,759.84
  4. Step 4: Simplify right side
    109,509.34x = 9,332,944,448.52
  5. Step 5: Solve for x
    x = 9,332,944,448.52/109,509.34
  6. Step 6: Final answer
    x = 85,225.10

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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.