Home / 105,616.62-145,748.64-57,868.92

Finding the Fourth Proportional to 105,616.62, 145,748.64 and 57,868.92

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Solution

The fourth proportional to 105,616.62, 145,748.64 and 57,868.92 is: 79,857.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,616.62 : 145,748.64 = 57,868.92 : x
  2. Step 2: Convert to fraction form
    105,616.62/145,748.64 = 57,868.92/x
  3. Step 3: Cross multiply
    105,616.62x = 145,748.64 × 57,868.92
  4. Step 4: Simplify right side
    105,616.62x = 8,434,316,388.27
  5. Step 5: Solve for x
    x = 8,434,316,388.27/105,616.62
  6. Step 6: Final answer
    x = 79,857.85

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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.