Home / 156,749.60-235,225.20-86,679.20

Finding the Fourth Proportional to 156,749.60, 235,225.20 and 86,679.20

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Solution

The fourth proportional to 156,749.60, 235,225.20 and 86,679.20 is: 130,074.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,749.60 : 235,225.20 = 86,679.20 : x
  2. Step 2: Convert to fraction form
    156,749.60/235,225.20 = 86,679.20/x
  3. Step 3: Cross multiply
    156,749.60x = 235,225.20 × 86,679.20
  4. Step 4: Simplify right side
    156,749.60x = 20,389,132,155.84
  5. Step 5: Solve for x
    x = 20,389,132,155.84/156,749.60
  6. Step 6: Final answer
    x = 130,074.54

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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.