Home / 138,698,079.92-191,401,004.54-76,817,089.88

Finding the Fourth Proportional to 138,698,079.92, 191,401,004.54 and 76,817,089.88

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Solution

The fourth proportional to 138,698,079.92, 191,401,004.54 and 76,817,089.88 is: 106,006,284.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,698,079.92 : 191,401,004.54 = 76,817,089.88 : x
  2. Step 2: Convert to fraction form
    138,698,079.92/191,401,004.54 = 76,817,089.88/x
  3. Step 3: Cross multiply
    138,698,079.92x = 191,401,004.54 × 76,817,089.88
  4. Step 4: Simplify right side
    138,698,079.92x = 14,702,868,168,871,466
  5. Step 5: Solve for x
    x = 14,702,868,168,871,466/138,698,079.92
  6. Step 6: Final answer
    x = 106,006,284.86

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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.