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Finding the Fourth Proportional to 103,587.70, 155,506.02 and 70,206.49

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Solution

The fourth proportional to 103,587.70, 155,506.02 and 70,206.49 is: 105,394.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,587.70 : 155,506.02 = 70,206.49 : x
  2. Step 2: Convert to fraction form
    103,587.70/155,506.02 = 70,206.49/x
  3. Step 3: Cross multiply
    103,587.70x = 155,506.02 × 70,206.49
  4. Step 4: Simplify right side
    103,587.70x = 10,917,531,838.07
  5. Step 5: Solve for x
    x = 10,917,531,838.07/103,587.70
  6. Step 6: Final answer
    x = 105,394.09

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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.