Home / 156,730.96-216,290.28-85,111.60

Finding the Fourth Proportional to 156,730.96, 216,290.28 and 85,111.60

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Solution

The fourth proportional to 156,730.96, 216,290.28 and 85,111.60 is: 117,454.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,730.96 : 216,290.28 = 85,111.60 : x
  2. Step 2: Convert to fraction form
    156,730.96/216,290.28 = 85,111.60/x
  3. Step 3: Cross multiply
    156,730.96x = 216,290.28 × 85,111.60
  4. Step 4: Simplify right side
    156,730.96x = 18,408,811,795.25
  5. Step 5: Solve for x
    x = 18,408,811,795.25/156,730.96
  6. Step 6: Final answer
    x = 117,454.85

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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.