Home / 98,918.59-148,318.08-38,875.21

Finding the Fourth Proportional to 98,918.59, 148,318.08 and 38,875.21

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Solution

The fourth proportional to 98,918.59, 148,318.08 and 38,875.21 is: 58,289.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,918.59 : 148,318.08 = 38,875.21 : x
  2. Step 2: Convert to fraction form
    98,918.59/148,318.08 = 38,875.21/x
  3. Step 3: Cross multiply
    98,918.59x = 148,318.08 × 38,875.21
  4. Step 4: Simplify right side
    98,918.59x = 5,765,896,506.80
  5. Step 5: Solve for x
    x = 5,765,896,506.80/98,918.59
  6. Step 6: Final answer
    x = 58,289.31

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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.