Home / 100,434.37-138,599.05-55,113.11

Finding the Fourth Proportional to 100,434.37, 138,599.05 and 55,113.11

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Solution

The fourth proportional to 100,434.37, 138,599.05 and 55,113.11 is: 76,055.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,434.37 : 138,599.05 = 55,113.11 : x
  2. Step 2: Convert to fraction form
    100,434.37/138,599.05 = 55,113.11/x
  3. Step 3: Cross multiply
    100,434.37x = 138,599.05 × 55,113.11
  4. Step 4: Simplify right side
    100,434.37x = 7,638,624,688.55
  5. Step 5: Solve for x
    x = 7,638,624,688.55/100,434.37
  6. Step 6: Final answer
    x = 76,055.88

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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.