Home / 258,173.10-387,172.31-98,211.06

Finding the Fourth Proportional to 258,173.10, 387,172.31 and 98,211.06

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Solution

The fourth proportional to 258,173.10, 387,172.31 and 98,211.06 is: 147,283.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,173.10 : 387,172.31 = 98,211.06 : x
  2. Step 2: Convert to fraction form
    258,173.10/387,172.31 = 98,211.06/x
  3. Step 3: Cross multiply
    258,173.10x = 387,172.31 × 98,211.06
  4. Step 4: Simplify right side
    258,173.10x = 38,024,602,967.75
  5. Step 5: Solve for x
    x = 38,024,602,967.75/258,173.10
  6. Step 6: Final answer
    x = 147,283.37

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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.