Home / 146,904,429.60-220,356,644.40-78,879,981.60

Finding the Fourth Proportional to 146,904,429.60, 220,356,644.40 and 78,879,981.60

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Solution

The fourth proportional to 146,904,429.60, 220,356,644.40 and 78,879,981.60 is: 118,319,972.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,904,429.60 : 220,356,644.40 = 78,879,981.60 : x
  2. Step 2: Convert to fraction form
    146,904,429.60/220,356,644.40 = 78,879,981.60/x
  3. Step 3: Cross multiply
    146,904,429.60x = 220,356,644.40 × 78,879,981.60
  4. Step 4: Simplify right side
    146,904,429.60x = 17,381,728,055,709,742
  5. Step 5: Solve for x
    x = 17,381,728,055,709,742/146,904,429.60
  6. Step 6: Final answer
    x = 118,319,972.40

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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.