Home / 128,262,090.87-192,390,440.82-31,218,339.87

Finding the Fourth Proportional to 128,262,090.87, 192,390,440.82 and 31,218,339.87

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Solution

The fourth proportional to 128,262,090.87, 192,390,440.82 and 31,218,339.87 is: 46,826,853.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,262,090.87 : 192,390,440.82 = 31,218,339.87 : x
  2. Step 2: Convert to fraction form
    128,262,090.87/192,390,440.82 = 31,218,339.87/x
  3. Step 3: Cross multiply
    128,262,090.87x = 192,390,440.82 × 31,218,339.87
  4. Step 4: Simplify right side
    128,262,090.87x = 6,006,110,169,257,881
  5. Step 5: Solve for x
    x = 6,006,110,169,257,881/128,262,090.87
  6. Step 6: Final answer
    x = 46,826,853.74

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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.