Home / 153,078.86-211,247.70-85,102.04

Finding the Fourth Proportional to 153,078.86, 211,247.70 and 85,102.04

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Solution

The fourth proportional to 153,078.86, 211,247.70 and 85,102.04 is: 117,440.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,078.86 : 211,247.70 = 85,102.04 : x
  2. Step 2: Convert to fraction form
    153,078.86/211,247.70 = 85,102.04/x
  3. Step 3: Cross multiply
    153,078.86x = 211,247.70 × 85,102.04
  4. Step 4: Simplify right side
    153,078.86x = 17,977,610,424.29
  5. Step 5: Solve for x
    x = 17,977,610,424.29/153,078.86
  6. Step 6: Final answer
    x = 117,440.19

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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.