Home / 121,903,644.80-168,179,139.06-69,664,655

Finding the Fourth Proportional to 121,903,644.80, 168,179,139.06 and 69,664,655

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Solution

The fourth proportional to 121,903,644.80, 168,179,139.06 and 69,664,655 is: 96,109,855.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,903,644.80 : 168,179,139.06 = 69,664,655 : x
  2. Step 2: Convert to fraction form
    121,903,644.80/168,179,139.06 = 69,664,655/x
  3. Step 3: Cross multiply
    121,903,644.80x = 168,179,139.06 × 69,664,655
  4. Step 4: Simplify right side
    121,903,644.80x = 11,716,141,700,811,924
  5. Step 5: Solve for x
    x = 11,716,141,700,811,924/121,903,644.80
  6. Step 6: Final answer
    x = 96,109,855.62

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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.