Home / 103,538.20-155,453.10-64,172.20

Finding the Fourth Proportional to 103,538.20, 155,453.10 and 64,172.20

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Solution

The fourth proportional to 103,538.20, 155,453.10 and 64,172.20 is: 96,348.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,538.20 : 155,453.10 = 64,172.20 : x
  2. Step 2: Convert to fraction form
    103,538.20/155,453.10 = 64,172.20/x
  3. Step 3: Cross multiply
    103,538.20x = 155,453.10 × 64,172.20
  4. Step 4: Simplify right side
    103,538.20x = 9,975,767,423.82
  5. Step 5: Solve for x
    x = 9,975,767,423.82/103,538.20
  6. Step 6: Final answer
    x = 96,348.67

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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.