Home / 138,348,475.20-207,522,712.80-99,606,426.30

Finding the Fourth Proportional to 138,348,475.20, 207,522,712.80 and 99,606,426.30

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Solution

The fourth proportional to 138,348,475.20, 207,522,712.80 and 99,606,426.30 is: 149,409,639.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,348,475.20 : 207,522,712.80 = 99,606,426.30 : x
  2. Step 2: Convert to fraction form
    138,348,475.20/207,522,712.80 = 99,606,426.30/x
  3. Step 3: Cross multiply
    138,348,475.20x = 207,522,712.80 × 99,606,426.30
  4. Step 4: Simplify right side
    138,348,475.20x = 20,670,595,798,089,268
  5. Step 5: Solve for x
    x = 20,670,595,798,089,268/138,348,475.20
  6. Step 6: Final answer
    x = 149,409,639.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.