Home / 147,615.90-221,272.65-72,620.70

Finding the Fourth Proportional to 147,615.90, 221,272.65 and 72,620.70

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Solution

The fourth proportional to 147,615.90, 221,272.65 and 72,620.70 is: 108,856.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,615.90 : 221,272.65 = 72,620.70 : x
  2. Step 2: Convert to fraction form
    147,615.90/221,272.65 = 72,620.70/x
  3. Step 3: Cross multiply
    147,615.90x = 221,272.65 × 72,620.70
  4. Step 4: Simplify right side
    147,615.90x = 16,068,974,733.86
  5. Step 5: Solve for x
    x = 16,068,974,733.86/147,615.90
  6. Step 6: Final answer
    x = 108,856.67

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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.