Home / 140,534.90-210,364.95-81,194.30

Finding the Fourth Proportional to 140,534.90, 210,364.95 and 81,194.30

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Solution

The fourth proportional to 140,534.90, 210,364.95 and 81,194.30 is: 121,538.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,534.90 : 210,364.95 = 81,194.30 : x
  2. Step 2: Convert to fraction form
    140,534.90/210,364.95 = 81,194.30/x
  3. Step 3: Cross multiply
    140,534.90x = 210,364.95 × 81,194.30
  4. Step 4: Simplify right side
    140,534.90x = 17,080,434,859.79
  5. Step 5: Solve for x
    x = 17,080,434,859.79/140,534.90
  6. Step 6: Final answer
    x = 121,538.74

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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.