Home / 91,918.04-137,916.14-51,942.51

Finding the Fourth Proportional to 91,918.04, 137,916.14 and 51,942.51

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Solution

The fourth proportional to 91,918.04, 137,916.14 and 51,942.51 is: 77,935.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,918.04 : 137,916.14 = 51,942.51 : x
  2. Step 2: Convert to fraction form
    91,918.04/137,916.14 = 51,942.51/x
  3. Step 3: Cross multiply
    91,918.04x = 137,916.14 × 51,942.51
  4. Step 4: Simplify right side
    91,918.04x = 7,163,710,221.40
  5. Step 5: Solve for x
    x = 7,163,710,221.40/91,918.04
  6. Step 6: Final answer
    x = 77,935.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.