Home / 123,202,931-169,992,863.56-72,942,192.79

Finding the Fourth Proportional to 123,202,931, 169,992,863.56 and 72,942,192.79

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Solution

The fourth proportional to 123,202,931, 169,992,863.56 and 72,942,192.79 is: 100,644,133.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,202,931 : 169,992,863.56 = 72,942,192.79 : x
  2. Step 2: Convert to fraction form
    123,202,931/169,992,863.56 = 72,942,192.79/x
  3. Step 3: Cross multiply
    123,202,931x = 169,992,863.56 × 72,942,192.79
  4. Step 4: Simplify right side
    123,202,931x = 12,399,652,226,717,688
  5. Step 5: Solve for x
    x = 12,399,652,226,717,688/123,202,931
  6. Step 6: Final answer
    x = 100,644,133.43

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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.