Home / 105,185.92-145,157.76-57,439.84

Finding the Fourth Proportional to 105,185.92, 145,157.76 and 57,439.84

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Solution

The fourth proportional to 105,185.92, 145,157.76 and 57,439.84 is: 79,267.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,185.92 : 145,157.76 = 57,439.84 : x
  2. Step 2: Convert to fraction form
    105,185.92/145,157.76 = 57,439.84/x
  3. Step 3: Cross multiply
    105,185.92x = 145,157.76 × 57,439.84
  4. Step 4: Simplify right side
    105,185.92x = 8,337,838,509.16
  5. Step 5: Solve for x
    x = 8,337,838,509.16/105,185.92
  6. Step 6: Final answer
    x = 79,267.63

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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.