Home / 138,698,078.92-191,401,003.16-76,817,088.88

Finding the Fourth Proportional to 138,698,078.92, 191,401,003.16 and 76,817,088.88

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Solution

The fourth proportional to 138,698,078.92, 191,401,003.16 and 76,817,088.88 is: 106,006,283.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,698,078.92 : 191,401,003.16 = 76,817,088.88 : x
  2. Step 2: Convert to fraction form
    138,698,078.92/191,401,003.16 = 76,817,088.88/x
  3. Step 3: Cross multiply
    138,698,078.92x = 191,401,003.16 × 76,817,088.88
  4. Step 4: Simplify right side
    138,698,078.92x = 14,702,867,871,462,880
  5. Step 5: Solve for x
    x = 14,702,867,871,462,880/138,698,078.92
  6. Step 6: Final answer
    x = 106,006,283.48

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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.