Home / 128,421,719.92-192,632,045.89-46,521,422.13

Finding the Fourth Proportional to 128,421,719.92, 192,632,045.89 and 46,521,422.13

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Solution

The fourth proportional to 128,421,719.92, 192,632,045.89 and 46,521,422.13 is: 69,781,939.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,421,719.92 : 192,632,045.89 = 46,521,422.13 : x
  2. Step 2: Convert to fraction form
    128,421,719.92/192,632,045.89 = 46,521,422.13/x
  3. Step 3: Cross multiply
    128,421,719.92x = 192,632,045.89 × 46,521,422.13
  4. Step 4: Simplify right side
    128,421,719.92x = 8,961,516,722,614,221
  5. Step 5: Solve for x
    x = 8,961,516,722,614,221/128,421,719.92
  6. Step 6: Final answer
    x = 69,781,939.75

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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.