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Finding the Fourth Proportional to 103,421.16, 155,107.44 and 65,926.26

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Solution

The fourth proportional to 103,421.16, 155,107.44 and 65,926.26 is: 98,873.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,421.16 : 155,107.44 = 65,926.26 : x
  2. Step 2: Convert to fraction form
    103,421.16/155,107.44 = 65,926.26/x
  3. Step 3: Cross multiply
    103,421.16x = 155,107.44 × 65,926.26
  4. Step 4: Simplify right side
    103,421.16x = 10,225,653,417.37
  5. Step 5: Solve for x
    x = 10,225,653,417.37/103,421.16
  6. Step 6: Final answer
    x = 98,873.90

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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.