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Finding the Fourth Proportional to 106,776.78, 147,316.74 and 68,557.74

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Solution

The fourth proportional to 106,776.78, 147,316.74 and 68,557.74 is: 94,587.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,776.78 : 147,316.74 = 68,557.74 : x
  2. Step 2: Convert to fraction form
    106,776.78/147,316.74 = 68,557.74/x
  3. Step 3: Cross multiply
    106,776.78x = 147,316.74 × 68,557.74
  4. Step 4: Simplify right side
    106,776.78x = 10,099,702,758.57
  5. Step 5: Solve for x
    x = 10,099,702,758.57/106,776.78
  6. Step 6: Final answer
    x = 94,587.07

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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.