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Finding the Fourth Proportional to 109,246.80, 163,918.80 and 39,176.40

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Solution

The fourth proportional to 109,246.80, 163,918.80 and 39,176.40 is: 58,782.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,246.80 : 163,918.80 = 39,176.40 : x
  2. Step 2: Convert to fraction form
    109,246.80/163,918.80 = 39,176.40/x
  3. Step 3: Cross multiply
    109,246.80x = 163,918.80 × 39,176.40
  4. Step 4: Simplify right side
    109,246.80x = 6,421,748,476.32
  5. Step 5: Solve for x
    x = 6,421,748,476.32/109,246.80
  6. Step 6: Final answer
    x = 58,782.03

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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.