Home / 91,905.03-137,896.73-51,929.51

Finding the Fourth Proportional to 91,905.03, 137,896.73 and 51,929.51

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Solution

The fourth proportional to 91,905.03, 137,896.73 and 51,929.51 is: 77,916.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,905.03 : 137,896.73 = 51,929.51 : x
  2. Step 2: Convert to fraction form
    91,905.03/137,896.73 = 51,929.51/x
  3. Step 3: Cross multiply
    91,905.03x = 137,896.73 × 51,929.51
  4. Step 4: Simplify right side
    91,905.03x = 7,160,908,865.11
  5. Step 5: Solve for x
    x = 7,160,908,865.11/91,905.03
  6. Step 6: Final answer
    x = 77,916.40

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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.