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Finding the Fourth Proportional to 109,688.73, 151,423.08 and 69,422.01

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Solution

The fourth proportional to 109,688.73, 151,423.08 and 69,422.01 is: 95,835.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,688.73 : 151,423.08 = 69,422.01 : x
  2. Step 2: Convert to fraction form
    109,688.73/151,423.08 = 69,422.01/x
  3. Step 3: Cross multiply
    109,688.73x = 151,423.08 × 69,422.01
  4. Step 4: Simplify right side
    109,688.73x = 10,512,094,573.99
  5. Step 5: Solve for x
    x = 10,512,094,573.99/109,688.73
  6. Step 6: Final answer
    x = 95,835.68

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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.