Home / 109,639.33-164,516.62-77,823.72

Finding the Fourth Proportional to 109,639.33, 164,516.62 and 77,823.72

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Solution

The fourth proportional to 109,639.33, 164,516.62 and 77,823.72 is: 116,776.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,639.33 : 164,516.62 = 77,823.72 : x
  2. Step 2: Convert to fraction form
    109,639.33/164,516.62 = 77,823.72/x
  3. Step 3: Cross multiply
    109,639.33x = 164,516.62 × 77,823.72
  4. Step 4: Simplify right side
    109,639.33x = 12,803,294,547.64
  5. Step 5: Solve for x
    x = 12,803,294,547.64/109,639.33
  6. Step 6: Final answer
    x = 116,776.48

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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.