Home / 147,615.80-221,456.10-72,771.80

Finding the Fourth Proportional to 147,615.80, 221,456.10 and 72,771.80

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Solution

The fourth proportional to 147,615.80, 221,456.10 and 72,771.80 is: 109,173.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,615.80 : 221,456.10 = 72,771.80 : x
  2. Step 2: Convert to fraction form
    147,615.80/221,456.10 = 72,771.80/x
  3. Step 3: Cross multiply
    147,615.80x = 221,456.10 × 72,771.80
  4. Step 4: Simplify right side
    147,615.80x = 16,115,759,017.98
  5. Step 5: Solve for x
    x = 16,115,759,017.98/147,615.80
  6. Step 6: Final answer
    x = 109,173.67

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1.5x scale

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.