Home / 141,820.64-195,709.84-77,290.40

Finding the Fourth Proportional to 141,820.64, 195,709.84 and 77,290.40

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Solution

The fourth proportional to 141,820.64, 195,709.84 and 77,290.40 is: 106,659.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,820.64 : 195,709.84 = 77,290.40 : x
  2. Step 2: Convert to fraction form
    141,820.64/195,709.84 = 77,290.40/x
  3. Step 3: Cross multiply
    141,820.64x = 195,709.84 × 77,290.40
  4. Step 4: Simplify right side
    141,820.64x = 15,126,492,113.58
  5. Step 5: Solve for x
    x = 15,126,492,113.58/141,820.64
  6. Step 6: Final answer
    x = 106,659.31

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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.