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Finding the Fourth Proportional to 145,802.52, 218,387.31 and 70,764.96

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Solution

The fourth proportional to 145,802.52, 218,387.31 and 70,764.96 is: 105,993.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,802.52 : 218,387.31 = 70,764.96 : x
  2. Step 2: Convert to fraction form
    145,802.52/218,387.31 = 70,764.96/x
  3. Step 3: Cross multiply
    145,802.52x = 218,387.31 × 70,764.96
  4. Step 4: Simplify right side
    145,802.52x = 15,454,169,256.66
  5. Step 5: Solve for x
    x = 15,454,169,256.66/145,802.52
  6. Step 6: Final answer
    x = 105,993.84

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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.