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Finding the Fourth Proportional to 103,091.70, 154,637.55 and 61,619.70

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Solution

The fourth proportional to 103,091.70, 154,637.55 and 61,619.70 is: 92,429.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,091.70 : 154,637.55 = 61,619.70 : x
  2. Step 2: Convert to fraction form
    103,091.70/154,637.55 = 61,619.70/x
  3. Step 3: Cross multiply
    103,091.70x = 154,637.55 × 61,619.70
  4. Step 4: Simplify right side
    103,091.70x = 9,528,719,439.74
  5. Step 5: Solve for x
    x = 9,528,719,439.74/103,091.70
  6. Step 6: Final answer
    x = 92,429.55

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1.5x scale

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.