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Finding the Fourth Proportional to 142,281.81, 196,389.80 and 93,919.04

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Solution

The fourth proportional to 142,281.81, 196,389.80 and 93,919.04 is: 129,635.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,281.81 : 196,389.80 = 93,919.04 : x
  2. Step 2: Convert to fraction form
    142,281.81/196,389.80 = 93,919.04/x
  3. Step 3: Cross multiply
    142,281.81x = 196,389.80 × 93,919.04
  4. Step 4: Simplify right side
    142,281.81x = 18,444,741,001.51
  5. Step 5: Solve for x
    x = 18,444,741,001.51/142,281.81
  6. Step 6: Final answer
    x = 129,635.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.