Home / 128,262,089.75-192,390,439.14-31,218,338.75

Finding the Fourth Proportional to 128,262,089.75, 192,390,439.14 and 31,218,338.75

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Solution

The fourth proportional to 128,262,089.75, 192,390,439.14 and 31,218,338.75 is: 46,826,852.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,262,089.75 : 192,390,439.14 = 31,218,338.75 : x
  2. Step 2: Convert to fraction form
    128,262,089.75/192,390,439.14 = 31,218,338.75/x
  3. Step 3: Cross multiply
    128,262,089.75x = 192,390,439.14 × 31,218,338.75
  4. Step 4: Simplify right side
    128,262,089.75x = 6,006,109,900,371,826
  5. Step 5: Solve for x
    x = 6,006,109,900,371,826/128,262,089.75
  6. Step 6: Final answer
    x = 46,826,852.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.