Home / 137,676,678.24-189,986,604.12-75,784,928.16

Finding the Fourth Proportional to 137,676,678.24, 189,986,604.12 and 75,784,928.16

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Solution

The fourth proportional to 137,676,678.24, 189,986,604.12 and 75,784,928.16 is: 104,579,231.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,676,678.24 : 189,986,604.12 = 75,784,928.16 : x
  2. Step 2: Convert to fraction form
    137,676,678.24/189,986,604.12 = 75,784,928.16/x
  3. Step 3: Cross multiply
    137,676,678.24x = 189,986,604.12 × 75,784,928.16
  4. Step 4: Simplify right side
    137,676,678.24x = 14,398,121,144,596,560
  5. Step 5: Solve for x
    x = 14,398,121,144,596,560/137,676,678.24
  6. Step 6: Final answer
    x = 104,579,231.06

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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.