Home / 137,107,189.37-189,207,900.47-78,371,115.66

Finding the Fourth Proportional to 137,107,189.37, 189,207,900.47 and 78,371,115.66

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Solution

The fourth proportional to 137,107,189.37, 189,207,900.47 and 78,371,115.66 is: 108,152,127.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,107,189.37 : 189,207,900.47 = 78,371,115.66 : x
  2. Step 2: Convert to fraction form
    137,107,189.37/189,207,900.47 = 78,371,115.66/x
  3. Step 3: Cross multiply
    137,107,189.37x = 189,207,900.47 × 78,371,115.66
  4. Step 4: Simplify right side
    137,107,189.37x = 14,828,434,251,716,066
  5. Step 5: Solve for x
    x = 14,828,434,251,716,066/137,107,189.37
  6. Step 6: Final answer
    x = 108,152,127.69

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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.