Home / 156,734.69-216,360.09-105,816.39

Finding the Fourth Proportional to 156,734.69, 216,360.09 and 105,816.39

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Solution

The fourth proportional to 156,734.69, 216,360.09 and 105,816.39 is: 146,071.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,734.69 : 216,360.09 = 105,816.39 : x
  2. Step 2: Convert to fraction form
    156,734.69/216,360.09 = 105,816.39/x
  3. Step 3: Cross multiply
    156,734.69x = 216,360.09 × 105,816.39
  4. Step 4: Simplify right side
    156,734.69x = 22,894,443,771.94
  5. Step 5: Solve for x
    x = 22,894,443,771.94/156,734.69
  6. Step 6: Final answer
    x = 146,071.32

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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.