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Finding the Fourth Proportional to 100,332.64, 138,460.60 and 55,014.76

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Solution

The fourth proportional to 100,332.64, 138,460.60 and 55,014.76 is: 75,921.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,332.64 : 138,460.60 = 55,014.76 : x
  2. Step 2: Convert to fraction form
    100,332.64/138,460.60 = 55,014.76/x
  3. Step 3: Cross multiply
    100,332.64x = 138,460.60 × 55,014.76
  4. Step 4: Simplify right side
    100,332.64x = 7,617,376,678.46
  5. Step 5: Solve for x
    x = 7,617,376,678.46/100,332.64
  6. Step 6: Final answer
    x = 75,921.22

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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.