Home / 190,916.52-286,068.60-138,355.62

Finding the Fourth Proportional to 190,916.52, 286,068.60 and 138,355.62

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Solution

The fourth proportional to 190,916.52, 286,068.60 and 138,355.62 is: 207,311.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,916.52 : 286,068.60 = 138,355.62 : x
  2. Step 2: Convert to fraction form
    190,916.52/286,068.60 = 138,355.62/x
  3. Step 3: Cross multiply
    190,916.52x = 286,068.60 × 138,355.62
  4. Step 4: Simplify right side
    190,916.52x = 39,579,198,515.53
  5. Step 5: Solve for x
    x = 39,579,198,515.53/190,916.52
  6. Step 6: Final answer
    x = 207,311.54

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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.