Home / 142,869.72-197,023.44-85,499.28

Finding the Fourth Proportional to 142,869.72, 197,023.44 and 85,499.28

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Solution

The fourth proportional to 142,869.72, 197,023.44 and 85,499.28 is: 117,907.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,869.72 : 197,023.44 = 85,499.28 : x
  2. Step 2: Convert to fraction form
    142,869.72/197,023.44 = 85,499.28/x
  3. Step 3: Cross multiply
    142,869.72x = 197,023.44 × 85,499.28
  4. Step 4: Simplify right side
    142,869.72x = 16,845,362,263.12
  5. Step 5: Solve for x
    x = 16,845,362,263.12/142,869.72
  6. Step 6: Final answer
    x = 117,907.16

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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.