Home / 103,815.81-155,602.25-47,661.35

Finding the Fourth Proportional to 103,815.81, 155,602.25 and 47,661.35

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Solution

The fourth proportional to 103,815.81, 155,602.25 and 47,661.35 is: 71,436.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,815.81 : 155,602.25 = 47,661.35 : x
  2. Step 2: Convert to fraction form
    103,815.81/155,602.25 = 47,661.35/x
  3. Step 3: Cross multiply
    103,815.81x = 155,602.25 × 47,661.35
  4. Step 4: Simplify right side
    103,815.81x = 7,416,213,298.04
  5. Step 5: Solve for x
    x = 7,416,213,298.04/103,815.81
  6. Step 6: Final answer
    x = 71,436.26

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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.