Home / 145,981.20-218,955.60-40,810.80

Finding the Fourth Proportional to 145,981.20, 218,955.60 and 40,810.80

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Solution

The fourth proportional to 145,981.20, 218,955.60 and 40,810.80 is: 61,211.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,981.20 : 218,955.60 = 40,810.80 : x
  2. Step 2: Convert to fraction form
    145,981.20/218,955.60 = 40,810.80/x
  3. Step 3: Cross multiply
    145,981.20x = 218,955.60 × 40,810.80
  4. Step 4: Simplify right side
    145,981.20x = 8,935,753,200.48
  5. Step 5: Solve for x
    x = 8,935,753,200.48/145,981.20
  6. Step 6: Final answer
    x = 61,211.67

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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.