Home / 145,284.03-217,520.03-78,484.85

Finding the Fourth Proportional to 145,284.03, 217,520.03 and 78,484.85

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Solution

The fourth proportional to 145,284.03, 217,520.03 and 78,484.85 is: 117,507.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,284.03 : 217,520.03 = 78,484.85 : x
  2. Step 2: Convert to fraction form
    145,284.03/217,520.03 = 78,484.85/x
  3. Step 3: Cross multiply
    145,284.03x = 217,520.03 × 78,484.85
  4. Step 4: Simplify right side
    145,284.03x = 17,072,026,850.86
  5. Step 5: Solve for x
    x = 17,072,026,850.86/145,284.03
  6. Step 6: Final answer
    x = 117,507.94

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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.