Home / 156,698.90-216,246.05-85,079.51

Finding the Fourth Proportional to 156,698.90, 216,246.05 and 85,079.51

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Solution

The fourth proportional to 156,698.90, 216,246.05 and 85,079.51 is: 117,410.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,698.90 : 216,246.05 = 85,079.51 : x
  2. Step 2: Convert to fraction form
    156,698.90/216,246.05 = 85,079.51/x
  3. Step 3: Cross multiply
    156,698.90x = 216,246.05 × 85,079.51
  4. Step 4: Simplify right side
    156,698.90x = 18,398,107,973.44
  5. Step 5: Solve for x
    x = 18,398,107,973.44/156,698.90
  6. Step 6: Final answer
    x = 117,410.58

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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.