Home / 142,128,205.44-196,138,275.66-83,391,869.76

Finding the Fourth Proportional to 142,128,205.44, 196,138,275.66 and 83,391,869.76

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Solution

The fourth proportional to 142,128,205.44, 196,138,275.66 and 83,391,869.76 is: 115,081,573.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,128,205.44 : 196,138,275.66 = 83,391,869.76 : x
  2. Step 2: Convert to fraction form
    142,128,205.44/196,138,275.66 = 83,391,869.76/x
  3. Step 3: Cross multiply
    142,128,205.44x = 196,138,275.66 × 83,391,869.76
  4. Step 4: Simplify right side
    142,128,205.44x = 16,356,337,538,789,698
  5. Step 5: Solve for x
    x = 16,356,337,538,789,698/142,128,205.44
  6. Step 6: Final answer
    x = 115,081,573.63

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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.