Home / 131,478,477.55-181,498,414.40-78,573,853.51

Finding the Fourth Proportional to 131,478,477.55, 181,498,414.40 and 78,573,853.51

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Solution

The fourth proportional to 131,478,477.55, 181,498,414.40 and 78,573,853.51 is: 108,466,648.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,478,477.55 : 181,498,414.40 = 78,573,853.51 : x
  2. Step 2: Convert to fraction form
    131,478,477.55/181,498,414.40 = 78,573,853.51/x
  3. Step 3: Cross multiply
    131,478,477.55x = 181,498,414.40 × 78,573,853.51
  4. Step 4: Simplify right side
    131,478,477.55x = 14,261,029,824,810,910
  5. Step 5: Solve for x
    x = 14,261,029,824,810,910/131,478,477.55
  6. Step 6: Final answer
    x = 108,466,648.62

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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.