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Finding the Fourth Proportional to 99,189.84, 136,881.54 and 53,867.46

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Solution

The fourth proportional to 99,189.84, 136,881.54 and 53,867.46 is: 74,336.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,189.84 : 136,881.54 = 53,867.46 : x
  2. Step 2: Convert to fraction form
    99,189.84/136,881.54 = 53,867.46/x
  3. Step 3: Cross multiply
    99,189.84x = 136,881.54 × 53,867.46
  4. Step 4: Simplify right side
    99,189.84x = 7,373,460,880.69
  5. Step 5: Solve for x
    x = 7,373,460,880.69/99,189.84
  6. Step 6: Final answer
    x = 74,336.86

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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.