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Finding the Fourth Proportional to 190,618.65, 285,742.08 and 90,752.00

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Solution

The fourth proportional to 190,618.65, 285,742.08 and 90,752.00 is: 136,039.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,618.65 : 285,742.08 = 90,752.00 : x
  2. Step 2: Convert to fraction form
    190,618.65/285,742.08 = 90,752.00/x
  3. Step 3: Cross multiply
    190,618.65x = 285,742.08 × 90,752.00
  4. Step 4: Simplify right side
    190,618.65x = 25,931,663,815.45
  5. Step 5: Solve for x
    x = 25,931,663,815.45/190,618.65
  6. Step 6: Final answer
    x = 136,039.49

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.