Home / 141,839.40-195,742.74-81,421.08

Finding the Fourth Proportional to 141,839.40, 195,742.74 and 81,421.08

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Solution

The fourth proportional to 141,839.40, 195,742.74 and 81,421.08 is: 112,363.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,839.40 : 195,742.74 = 81,421.08 : x
  2. Step 2: Convert to fraction form
    141,839.40/195,742.74 = 81,421.08/x
  3. Step 3: Cross multiply
    141,839.40x = 195,742.74 × 81,421.08
  4. Step 4: Simplify right side
    141,839.40x = 15,937,585,292.96
  5. Step 5: Solve for x
    x = 15,937,585,292.96/141,839.40
  6. Step 6: Final answer
    x = 112,363.60

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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.