Home / 190,191.06-285,039.18-77,742.72

Finding the Fourth Proportional to 190,191.06, 285,039.18 and 77,742.72

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Solution

The fourth proportional to 190,191.06, 285,039.18 and 77,742.72 is: 116,512.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,191.06 : 285,039.18 = 77,742.72 : x
  2. Step 2: Convert to fraction form
    190,191.06/285,039.18 = 77,742.72/x
  3. Step 3: Cross multiply
    190,191.06x = 285,039.18 × 77,742.72
  4. Step 4: Simplify right side
    190,191.06x = 22,159,721,159.77
  5. Step 5: Solve for x
    x = 22,159,721,159.77/190,191.06
  6. Step 6: Final answer
    x = 116,512.95

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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.