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Finding the Fourth Proportional to 94,561.40, 141,842.10 and 85,813.40

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Solution

The fourth proportional to 94,561.40, 141,842.10 and 85,813.40 is: 128,720.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,561.40 : 141,842.10 = 85,813.40 : x
  2. Step 2: Convert to fraction form
    94,561.40/141,842.10 = 85,813.40/x
  3. Step 3: Cross multiply
    94,561.40x = 141,842.10 × 85,813.40
  4. Step 4: Simplify right side
    94,561.40x = 12,171,952,864.14
  5. Step 5: Solve for x
    x = 12,171,952,864.14/94,561.40
  6. Step 6: Final answer
    x = 128,720.10

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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.