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Finding the Fourth Proportional to 98,670.26, 136,059.81 and 79,529.91

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Solution

The fourth proportional to 98,670.26, 136,059.81 and 79,529.91 is: 109,666.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,670.26 : 136,059.81 = 79,529.91 : x
  2. Step 2: Convert to fraction form
    98,670.26/136,059.81 = 79,529.91/x
  3. Step 3: Cross multiply
    98,670.26x = 136,059.81 × 79,529.91
  4. Step 4: Simplify right side
    98,670.26x = 10,820,824,443.92
  5. Step 5: Solve for x
    x = 10,820,824,443.92/98,670.26
  6. Step 6: Final answer
    x = 109,666.53

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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.