Home / 153,173.30-211,362.95-85,179.33

Finding the Fourth Proportional to 153,173.30, 211,362.95 and 85,179.33

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Solution

The fourth proportional to 153,173.30, 211,362.95 and 85,179.33 is: 117,538.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,173.30 : 211,362.95 = 85,179.33 : x
  2. Step 2: Convert to fraction form
    153,173.30/211,362.95 = 85,179.33/x
  3. Step 3: Cross multiply
    153,173.30x = 211,362.95 × 85,179.33
  4. Step 4: Simplify right side
    153,173.30x = 18,003,754,680.77
  5. Step 5: Solve for x
    x = 18,003,754,680.77/153,173.30
  6. Step 6: Final answer
    x = 117,538.47

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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.