Home / 111,150.03-153,345.17-72,930.67

Finding the Fourth Proportional to 111,150.03, 153,345.17 and 72,930.67

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Solution

The fourth proportional to 111,150.03, 153,345.17 and 72,930.67 is: 100,616.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,150.03 : 153,345.17 = 72,930.67 : x
  2. Step 2: Convert to fraction form
    111,150.03/153,345.17 = 72,930.67/x
  3. Step 3: Cross multiply
    111,150.03x = 153,345.17 × 72,930.67
  4. Step 4: Simplify right side
    111,150.03x = 11,183,565,624.71
  5. Step 5: Solve for x
    x = 11,183,565,624.71/111,150.03
  6. Step 6: Final answer
    x = 100,616.85

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1.5x scale

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.