Home / 131,478,709.28-181,498,735.68-78,574,087.04

Finding the Fourth Proportional to 131,478,709.28, 181,498,735.68 and 78,574,087.04

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Solution

The fourth proportional to 131,478,709.28, 181,498,735.68 and 78,574,087.04 is: 108,466,971.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,478,709.28 : 181,498,735.68 = 78,574,087.04 : x
  2. Step 2: Convert to fraction form
    131,478,709.28/181,498,735.68 = 78,574,087.04/x
  3. Step 3: Cross multiply
    131,478,709.28x = 181,498,735.68 × 78,574,087.04
  4. Step 4: Simplify right side
    131,478,709.28x = 14,261,097,454,970,276
  5. Step 5: Solve for x
    x = 14,261,097,454,970,276/131,478,709.28
  6. Step 6: Final answer
    x = 108,466,971.82

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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.