Home / 145,683.36-218,388.96-70,748.64

Finding the Fourth Proportional to 145,683.36, 218,388.96 and 70,748.64

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Solution

The fourth proportional to 145,683.36, 218,388.96 and 70,748.64 is: 106,056.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,683.36 : 218,388.96 = 70,748.64 : x
  2. Step 2: Convert to fraction form
    145,683.36/218,388.96 = 70,748.64/x
  3. Step 3: Cross multiply
    145,683.36x = 218,388.96 × 70,748.64
  4. Step 4: Simplify right side
    145,683.36x = 15,450,721,911.01
  5. Step 5: Solve for x
    x = 15,450,721,911.01/145,683.36
  6. Step 6: Final answer
    x = 106,056.88

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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.