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Finding the Fourth Proportional to 104,681.57, 144,399.06 and 65,857.67

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Solution

The fourth proportional to 104,681.57, 144,399.06 and 65,857.67 is: 90,844.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,681.57 : 144,399.06 = 65,857.67 : x
  2. Step 2: Convert to fraction form
    104,681.57/144,399.06 = 65,857.67/x
  3. Step 3: Cross multiply
    104,681.57x = 144,399.06 × 65,857.67
  4. Step 4: Simplify right side
    104,681.57x = 9,509,785,641.79
  5. Step 5: Solve for x
    x = 9,509,785,641.79/104,681.57
  6. Step 6: Final answer
    x = 90,844.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.