Home / 129,168,344.52-178,255,901.70-78,940,695.24

Finding the Fourth Proportional to 129,168,344.52, 178,255,901.70 and 78,940,695.24

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Solution

The fourth proportional to 129,168,344.52, 178,255,901.70 and 78,940,695.24 is: 108,940,351.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,168,344.52 : 178,255,901.70 = 78,940,695.24 : x
  2. Step 2: Convert to fraction form
    129,168,344.52/178,255,901.70 = 78,940,695.24/x
  3. Step 3: Cross multiply
    129,168,344.52x = 178,255,901.70 × 78,940,695.24
  4. Step 4: Simplify right side
    129,168,344.52x = 14,071,644,810,831,096
  5. Step 5: Solve for x
    x = 14,071,644,810,831,096/129,168,344.52
  6. Step 6: Final answer
    x = 108,940,351.16

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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.