Home / 103,693.90-155,540.85-70,516.30

Finding the Fourth Proportional to 103,693.90, 155,540.85 and 70,516.30

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Solution

The fourth proportional to 103,693.90, 155,540.85 and 70,516.30 is: 105,774.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,693.90 : 155,540.85 = 70,516.30 : x
  2. Step 2: Convert to fraction form
    103,693.90/155,540.85 = 70,516.30/x
  3. Step 3: Cross multiply
    103,693.90x = 155,540.85 × 70,516.30
  4. Step 4: Simplify right side
    103,693.90x = 10,968,165,240.86
  5. Step 5: Solve for x
    x = 10,968,165,240.86/103,693.90
  6. Step 6: Final answer
    x = 105,774.45

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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.