Home / 190,926.40-286,303.20-85,691.20

Finding the Fourth Proportional to 190,926.40, 286,303.20 and 85,691.20

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Solution

The fourth proportional to 190,926.40, 286,303.20 and 85,691.20 is: 128,498.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,926.40 : 286,303.20 = 85,691.20 : x
  2. Step 2: Convert to fraction form
    190,926.40/286,303.20 = 85,691.20/x
  3. Step 3: Cross multiply
    190,926.40x = 286,303.20 × 85,691.20
  4. Step 4: Simplify right side
    190,926.40x = 24,533,664,771.84
  5. Step 5: Solve for x
    x = 24,533,664,771.84/190,926.40
  6. Step 6: Final answer
    x = 128,498.02

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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.