Home / 98,760.61-136,289.26-53,438.68

Finding the Fourth Proportional to 98,760.61, 136,289.26 and 53,438.68

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Solution

The fourth proportional to 98,760.61, 136,289.26 and 53,438.68 is: 73,745.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,760.61 : 136,289.26 = 53,438.68 : x
  2. Step 2: Convert to fraction form
    98,760.61/136,289.26 = 53,438.68/x
  3. Step 3: Cross multiply
    98,760.61x = 136,289.26 × 53,438.68
  4. Step 4: Simplify right side
    98,760.61x = 7,283,118,389.74
  5. Step 5: Solve for x
    x = 7,283,118,389.74/98,760.61
  6. Step 6: Final answer
    x = 73,745.17

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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.