Home / 145,678,314.60-218,517,471.90-138,959,850.60

Finding the Fourth Proportional to 145,678,314.60, 218,517,471.90 and 138,959,850.60

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Solution

The fourth proportional to 145,678,314.60, 218,517,471.90 and 138,959,850.60 is: 208,439,775.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,678,314.60 : 218,517,471.90 = 138,959,850.60 : x
  2. Step 2: Convert to fraction form
    145,678,314.60/218,517,471.90 = 138,959,850.60/x
  3. Step 3: Cross multiply
    145,678,314.60x = 218,517,471.90 × 138,959,850.60
  4. Step 4: Simplify right side
    145,678,314.60x = 30,365,155,248,713,696
  5. Step 5: Solve for x
    x = 30,365,155,248,713,696/145,678,314.60
  6. Step 6: Final answer
    x = 208,439,775.90

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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.