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Finding the Fourth Proportional to 190,637.82, 286,142.63 and 90,866.88

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Solution

The fourth proportional to 190,637.82, 286,142.63 and 90,866.88 is: 136,388.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,637.82 : 286,142.63 = 90,866.88 : x
  2. Step 2: Convert to fraction form
    190,637.82/286,142.63 = 90,866.88/x
  3. Step 3: Cross multiply
    190,637.82x = 286,142.63 × 90,866.88
  4. Step 4: Simplify right side
    190,637.82x = 26,000,887,568.76
  5. Step 5: Solve for x
    x = 26,000,887,568.76/190,637.82
  6. Step 6: Final answer
    x = 136,388.93

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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.