Home / 154,518.03-213,242.76-86,531.02

Finding the Fourth Proportional to 154,518.03, 213,242.76 and 86,531.02

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Solution

The fourth proportional to 154,518.03, 213,242.76 and 86,531.02 is: 119,417.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,518.03 : 213,242.76 = 86,531.02 : x
  2. Step 2: Convert to fraction form
    154,518.03/213,242.76 = 86,531.02/x
  3. Step 3: Cross multiply
    154,518.03x = 213,242.76 × 86,531.02
  4. Step 4: Simplify right side
    154,518.03x = 18,452,112,997.31
  5. Step 5: Solve for x
    x = 18,452,112,997.31/154,518.03
  6. Step 6: Final answer
    x = 119,417.22

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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.