Home / 99,931.19-137,841.63-76,005.41

Finding the Fourth Proportional to 99,931.19, 137,841.63 and 76,005.41

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Solution

The fourth proportional to 99,931.19, 137,841.63 and 76,005.41 is: 104,839.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,931.19 : 137,841.63 = 76,005.41 : x
  2. Step 2: Convert to fraction form
    99,931.19/137,841.63 = 76,005.41/x
  3. Step 3: Cross multiply
    99,931.19x = 137,841.63 × 76,005.41
  4. Step 4: Simplify right side
    99,931.19x = 10,476,709,603.22
  5. Step 5: Solve for x
    x = 10,476,709,603.22/99,931.19
  6. Step 6: Final answer
    x = 104,839.24

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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.