Home / 190,916.53-286,139.69-78,526.60

Finding the Fourth Proportional to 190,916.53, 286,139.69 and 78,526.60

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Solution

The fourth proportional to 190,916.53, 286,139.69 and 78,526.60 is: 117,693.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,916.53 : 286,139.69 = 78,526.60 : x
  2. Step 2: Convert to fraction form
    190,916.53/286,139.69 = 78,526.60/x
  3. Step 3: Cross multiply
    190,916.53x = 286,139.69 × 78,526.60
  4. Step 4: Simplify right side
    190,916.53x = 22,469,576,167.25
  5. Step 5: Solve for x
    x = 22,469,576,167.25/190,916.53
  6. Step 6: Final answer
    x = 117,693.20

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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.