Home / 105,157.11-145,110.05-57,410.36

Finding the Fourth Proportional to 105,157.11, 145,110.05 and 57,410.36

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Solution

The fourth proportional to 105,157.11, 145,110.05 and 57,410.36 is: 79,222.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,157.11 : 145,110.05 = 57,410.36 : x
  2. Step 2: Convert to fraction form
    105,157.11/145,110.05 = 57,410.36/x
  3. Step 3: Cross multiply
    105,157.11x = 145,110.05 × 57,410.36
  4. Step 4: Simplify right side
    105,157.11x = 8,330,819,484.57
  5. Step 5: Solve for x
    x = 8,330,819,484.57/105,157.11
  6. Step 6: Final answer
    x = 79,222.60

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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.