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Finding the Fourth Proportional to 141,755.51, 212,559.43 and 66,855.54

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Solution

The fourth proportional to 141,755.51, 212,559.43 and 66,855.54 is: 100,248.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,755.51 : 212,559.43 = 66,855.54 : x
  2. Step 2: Convert to fraction form
    141,755.51/212,559.43 = 66,855.54/x
  3. Step 3: Cross multiply
    141,755.51x = 212,559.43 × 66,855.54
  4. Step 4: Simplify right side
    141,755.51x = 14,210,775,140.46
  5. Step 5: Solve for x
    x = 14,210,775,140.46/141,755.51
  6. Step 6: Final answer
    x = 100,248.49

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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.