Home / 138,781,028.48-191,517,820.58-76,901,367.02

Finding the Fourth Proportional to 138,781,028.48, 191,517,820.58 and 76,901,367.02

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Solution

The fourth proportional to 138,781,028.48, 191,517,820.58 and 76,901,367.02 is: 106,123,887.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,781,028.48 : 191,517,820.58 = 76,901,367.02 : x
  2. Step 2: Convert to fraction form
    138,781,028.48/191,517,820.58 = 76,901,367.02/x
  3. Step 3: Cross multiply
    138,781,028.48x = 191,517,820.58 × 76,901,367.02
  4. Step 4: Simplify right side
    138,781,028.48x = 14,727,982,210,908,580
  5. Step 5: Solve for x
    x = 14,727,982,210,908,580/138,781,028.48
  6. Step 6: Final answer
    x = 106,123,887.19

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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.