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Finding the Fourth Proportional to 98,733, 136,250.64 and 55,712.79

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Solution

The fourth proportional to 98,733, 136,250.64 and 55,712.79 is: 76,883.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,733 : 136,250.64 = 55,712.79 : x
  2. Step 2: Convert to fraction form
    98,733/136,250.64 = 55,712.79/x
  3. Step 3: Cross multiply
    98,733x = 136,250.64 × 55,712.79
  4. Step 4: Simplify right side
    98,733x = 7,590,903,293.69
  5. Step 5: Solve for x
    x = 7,590,903,293.69/98,733
  6. Step 6: Final answer
    x = 76,883.14

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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.