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Finding the Fourth Proportional to 141,904.31, 212,615.59 and 85,626.16

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Solution

The fourth proportional to 141,904.31, 212,615.59 and 85,626.16 is: 128,293.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,904.31 : 212,615.59 = 85,626.16 : x
  2. Step 2: Convert to fraction form
    141,904.31/212,615.59 = 85,626.16/x
  3. Step 3: Cross multiply
    141,904.31x = 212,615.59 × 85,626.16
  4. Step 4: Simplify right side
    141,904.31x = 18,205,457,379.57
  5. Step 5: Solve for x
    x = 18,205,457,379.57/141,904.31
  6. Step 6: Final answer
    x = 128,293.90

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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.