Home / 130,916.20-180,687.88-77,198

Finding the Fourth Proportional to 130,916.20, 180,687.88 and 77,198

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Solution

The fourth proportional to 130,916.20, 180,687.88 and 77,198 is: 106,547.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,916.20 : 180,687.88 = 77,198 : x
  2. Step 2: Convert to fraction form
    130,916.20/180,687.88 = 77,198/x
  3. Step 3: Cross multiply
    130,916.20x = 180,687.88 × 77,198
  4. Step 4: Simplify right side
    130,916.20x = 13,948,742,960.24
  5. Step 5: Solve for x
    x = 13,948,742,960.24/130,916.20
  6. Step 6: Final answer
    x = 106,547.11

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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.