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Finding the Fourth Proportional to 117,684.95, 162,428.81 and 69,929.06

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Solution

The fourth proportional to 117,684.95, 162,428.81 and 69,929.06 is: 96,516.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,684.95 : 162,428.81 = 69,929.06 : x
  2. Step 2: Convert to fraction form
    117,684.95/162,428.81 = 69,929.06/x
  3. Step 3: Cross multiply
    117,684.95x = 162,428.81 × 69,929.06
  4. Step 4: Simplify right side
    117,684.95x = 11,358,492,838.43
  5. Step 5: Solve for x
    x = 11,358,492,838.43/117,684.95
  6. Step 6: Final answer
    x = 96,516.11

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1.5x scale

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.