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Finding the Fourth Proportional to 100,362.02, 138,492.71 and 55,030.60

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Solution

The fourth proportional to 100,362.02, 138,492.71 and 55,030.60 is: 75,938.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,362.02 : 138,492.71 = 55,030.60 : x
  2. Step 2: Convert to fraction form
    100,362.02/138,492.71 = 55,030.60/x
  3. Step 3: Cross multiply
    100,362.02x = 138,492.71 × 55,030.60
  4. Step 4: Simplify right side
    100,362.02x = 7,621,336,305.54
  5. Step 5: Solve for x
    x = 7,621,336,305.54/100,362.02
  6. Step 6: Final answer
    x = 75,938.45

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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.