Home / 156,811.60-235,044.60-86,741.20

Finding the Fourth Proportional to 156,811.60, 235,044.60 and 86,741.20

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Solution

The fourth proportional to 156,811.60, 235,044.60 and 86,741.20 is: 130,016.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,811.60 : 235,044.60 = 86,741.20 : x
  2. Step 2: Convert to fraction form
    156,811.60/235,044.60 = 86,741.20/x
  3. Step 3: Cross multiply
    156,811.60x = 235,044.60 × 86,741.20
  4. Step 4: Simplify right side
    156,811.60x = 20,388,050,657.52
  5. Step 5: Solve for x
    x = 20,388,050,657.52/156,811.60
  6. Step 6: Final answer
    x = 130,016.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.