Home / 113,271.06-156,083.71-87,621.64

Finding the Fourth Proportional to 113,271.06, 156,083.71 and 87,621.64

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Solution

The fourth proportional to 113,271.06, 156,083.71 and 87,621.64 is: 120,739.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,271.06 : 156,083.71 = 87,621.64 : x
  2. Step 2: Convert to fraction form
    113,271.06/156,083.71 = 87,621.64/x
  3. Step 3: Cross multiply
    113,271.06x = 156,083.71 × 87,621.64
  4. Step 4: Simplify right side
    113,271.06x = 13,676,310,647.48
  5. Step 5: Solve for x
    x = 13,676,310,647.48/113,271.06
  6. Step 6: Final answer
    x = 120,739.67

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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.