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Finding the Fourth Proportional to 190,433.76, 285,688.00 and 70,491.75

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Solution

The fourth proportional to 190,433.76, 285,688.00 and 70,491.75 is: 105,751.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,433.76 : 285,688.00 = 70,491.75 : x
  2. Step 2: Convert to fraction form
    190,433.76/285,688.00 = 70,491.75/x
  3. Step 3: Cross multiply
    190,433.76x = 285,688.00 × 70,491.75
  4. Step 4: Simplify right side
    190,433.76x = 20,138,648,303.02
  5. Step 5: Solve for x
    x = 20,138,648,303.02/190,433.76
  6. Step 6: Final answer
    x = 105,751.46

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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.