Home / 156,968.81-216,619.67-85,349.32

Finding the Fourth Proportional to 156,968.81, 216,619.67 and 85,349.32

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Solution

The fourth proportional to 156,968.81, 216,619.67 and 85,349.32 is: 117,783.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,968.81 : 216,619.67 = 85,349.32 : x
  2. Step 2: Convert to fraction form
    156,968.81/216,619.67 = 85,349.32/x
  3. Step 3: Cross multiply
    156,968.81x = 216,619.67 × 85,349.32
  4. Step 4: Simplify right side
    156,968.81x = 18,488,340,023.28
  5. Step 5: Solve for x
    x = 18,488,340,023.28/156,968.81
  6. Step 6: Final answer
    x = 117,783.53

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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.