Home / 145,007,563.80-217,511,345.70-80,510,309.40

Finding the Fourth Proportional to 145,007,563.80, 217,511,345.70 and 80,510,309.40

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Solution

The fourth proportional to 145,007,563.80, 217,511,345.70 and 80,510,309.40 is: 120,765,464.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,007,563.80 : 217,511,345.70 = 80,510,309.40 : x
  2. Step 2: Convert to fraction form
    145,007,563.80/217,511,345.70 = 80,510,309.40/x
  3. Step 3: Cross multiply
    145,007,563.80x = 217,511,345.70 × 80,510,309.40
  4. Step 4: Simplify right side
    145,007,563.80x = 17,511,905,740,317,360
  5. Step 5: Solve for x
    x = 17,511,905,740,317,360/145,007,563.80
  6. Step 6: Final answer
    x = 120,765,464.10

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1.5x scale

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.