Home / 96,931.36-145,372.73-68,769.28

Finding the Fourth Proportional to 96,931.36, 145,372.73 and 68,769.28

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Solution

The fourth proportional to 96,931.36, 145,372.73 and 68,769.28 is: 103,136.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,931.36 : 145,372.73 = 68,769.28 : x
  2. Step 2: Convert to fraction form
    96,931.36/145,372.73 = 68,769.28/x
  3. Step 3: Cross multiply
    96,931.36x = 145,372.73 × 68,769.28
  4. Step 4: Simplify right side
    96,931.36x = 9,997,176,903.02
  5. Step 5: Solve for x
    x = 9,997,176,903.02/96,931.36
  6. Step 6: Final answer
    x = 103,136.67

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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.