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Finding the Fourth Proportional to 102,324.80, 153,602.40 and 79,054.40

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Solution

The fourth proportional to 102,324.80, 153,602.40 and 79,054.40 is: 118,670.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,324.80 : 153,602.40 = 79,054.40 : x
  2. Step 2: Convert to fraction form
    102,324.80/153,602.40 = 79,054.40/x
  3. Step 3: Cross multiply
    102,324.80x = 153,602.40 × 79,054.40
  4. Step 4: Simplify right side
    102,324.80x = 12,142,945,570.56
  5. Step 5: Solve for x
    x = 12,142,945,570.56/102,324.80
  6. Step 6: Final answer
    x = 118,670.60

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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.