Home / 128,454,828.89-177,267,835.01-69,717,494.03

Finding the Fourth Proportional to 128,454,828.89, 177,267,835.01 and 69,717,494.03

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Solution

The fourth proportional to 128,454,828.89, 177,267,835.01 and 69,717,494.03 is: 96,210,234.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,454,828.89 : 177,267,835.01 = 69,717,494.03 : x
  2. Step 2: Convert to fraction form
    128,454,828.89/177,267,835.01 = 69,717,494.03/x
  3. Step 3: Cross multiply
    128,454,828.89x = 177,267,835.01 × 69,717,494.03
  4. Step 4: Simplify right side
    128,454,828.89x = 12,358,669,229,020,700
  5. Step 5: Solve for x
    x = 12,358,669,229,020,700/128,454,828.89
  6. Step 6: Final answer
    x = 96,210,234.65

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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.