Home / 105,358.35-145,270.30-85,152.75

Finding the Fourth Proportional to 105,358.35, 145,270.30 and 85,152.75

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Solution

The fourth proportional to 105,358.35, 145,270.30 and 85,152.75 is: 117,410.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,358.35 : 145,270.30 = 85,152.75 : x
  2. Step 2: Convert to fraction form
    105,358.35/145,270.30 = 85,152.75/x
  3. Step 3: Cross multiply
    105,358.35x = 145,270.30 × 85,152.75
  4. Step 4: Simplify right side
    105,358.35x = 12,370,165,538.33
  5. Step 5: Solve for x
    x = 12,370,165,538.33/105,358.35
  6. Step 6: Final answer
    x = 117,410.40

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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.