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Finding the Fourth Proportional to 145,370.40, 218,055.60 and 92,623.20

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Solution

The fourth proportional to 145,370.40, 218,055.60 and 92,623.20 is: 138,934.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,370.40 : 218,055.60 = 92,623.20 : x
  2. Step 2: Convert to fraction form
    145,370.40/218,055.60 = 92,623.20/x
  3. Step 3: Cross multiply
    145,370.40x = 218,055.60 × 92,623.20
  4. Step 4: Simplify right side
    145,370.40x = 20,197,007,449.92
  5. Step 5: Solve for x
    x = 20,197,007,449.92/145,370.40
  6. Step 6: Final answer
    x = 138,934.80

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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.