Home / 138,502,687.84-191,139,335.92-76,621,960.16

Finding the Fourth Proportional to 138,502,687.84, 191,139,335.92 and 76,621,960.16

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Solution

The fourth proportional to 138,502,687.84, 191,139,335.92 and 76,621,960.16 is: 105,741,417.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,502,687.84 : 191,139,335.92 = 76,621,960.16 : x
  2. Step 2: Convert to fraction form
    138,502,687.84/191,139,335.92 = 76,621,960.16/x
  3. Step 3: Cross multiply
    138,502,687.84x = 191,139,335.92 × 76,621,960.16
  4. Step 4: Simplify right side
    138,502,687.84x = 14,645,470,581,871,096
  5. Step 5: Solve for x
    x = 14,645,470,581,871,096/138,502,687.84
  6. Step 6: Final answer
    x = 105,741,417.80

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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.