Home / 156,394.36-216,003.57-102,918.11

Finding the Fourth Proportional to 156,394.36, 216,003.57 and 102,918.11

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Solution

The fourth proportional to 156,394.36, 216,003.57 and 102,918.11 is: 142,145.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,394.36 : 216,003.57 = 102,918.11 : x
  2. Step 2: Convert to fraction form
    156,394.36/216,003.57 = 102,918.11/x
  3. Step 3: Cross multiply
    156,394.36x = 216,003.57 × 102,918.11
  4. Step 4: Simplify right side
    156,394.36x = 22,230,678,985.07
  5. Step 5: Solve for x
    x = 22,230,678,985.07/156,394.36
  6. Step 6: Final answer
    x = 142,145.02

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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.