Home / 141,780.64-195,570.72-84,381.40

Finding the Fourth Proportional to 141,780.64, 195,570.72 and 84,381.40

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Solution

The fourth proportional to 141,780.64, 195,570.72 and 84,381.40 is: 116,394.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,780.64 : 195,570.72 = 84,381.40 : x
  2. Step 2: Convert to fraction form
    141,780.64/195,570.72 = 84,381.40/x
  3. Step 3: Cross multiply
    141,780.64x = 195,570.72 × 84,381.40
  4. Step 4: Simplify right side
    141,780.64x = 16,502,531,152.61
  5. Step 5: Solve for x
    x = 16,502,531,152.61/141,780.64
  6. Step 6: Final answer
    x = 116,394.81

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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.