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Finding the Fourth Proportional to 163,677.76, 245,357.40 and 78,266.40

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Solution

The fourth proportional to 163,677.76, 245,357.40 and 78,266.40 is: 117,323.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,677.76 : 245,357.40 = 78,266.40 : x
  2. Step 2: Convert to fraction form
    163,677.76/245,357.40 = 78,266.40/x
  3. Step 3: Cross multiply
    163,677.76x = 245,357.40 × 78,266.40
  4. Step 4: Simplify right side
    163,677.76x = 19,203,241,164.90
  5. Step 5: Solve for x
    x = 19,203,241,164.90/163,677.76
  6. Step 6: Final answer
    x = 117,323.46

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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.