Home / 156,403.65-215,837.33-84,783.45

Finding the Fourth Proportional to 156,403.65, 215,837.33 and 84,783.45

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Solution

The fourth proportional to 156,403.65, 215,837.33 and 84,783.45 is: 117,001.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,403.65 : 215,837.33 = 84,783.45 : x
  2. Step 2: Convert to fraction form
    156,403.65/215,837.33 = 84,783.45/x
  3. Step 3: Cross multiply
    156,403.65x = 215,837.33 × 84,783.45
  4. Step 4: Simplify right side
    156,403.65x = 18,299,433,052.27
  5. Step 5: Solve for x
    x = 18,299,433,052.27/156,403.65
  6. Step 6: Final answer
    x = 117,001.32

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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.