Home / 105,257.19-145,253.22-57,509.51

Finding the Fourth Proportional to 105,257.19, 145,253.22 and 57,509.51

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Solution

The fourth proportional to 105,257.19, 145,253.22 and 57,509.51 is: 79,362.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,257.19 : 145,253.22 = 57,509.51 : x
  2. Step 2: Convert to fraction form
    105,257.19/145,253.22 = 57,509.51/x
  3. Step 3: Cross multiply
    105,257.19x = 145,253.22 × 57,509.51
  4. Step 4: Simplify right side
    105,257.19x = 8,353,441,868.48
  5. Step 5: Solve for x
    x = 8,353,441,868.48/105,257.19
  6. Step 6: Final answer
    x = 79,362.20

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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.