Home / 129,335.06-178,455.62-75,609.65

Finding the Fourth Proportional to 129,335.06, 178,455.62 and 75,609.65

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Solution

The fourth proportional to 129,335.06, 178,455.62 and 75,609.65 is: 104,325.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,335.06 : 178,455.62 = 75,609.65 : x
  2. Step 2: Convert to fraction form
    129,335.06/178,455.62 = 75,609.65/x
  3. Step 3: Cross multiply
    129,335.06x = 178,455.62 × 75,609.65
  4. Step 4: Simplify right side
    129,335.06x = 13,492,966,590.68
  5. Step 5: Solve for x
    x = 13,492,966,590.68/129,335.06
  6. Step 6: Final answer
    x = 104,325.67

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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.