Home / 142,774.40-197,025.72-79,111.64

Finding the Fourth Proportional to 142,774.40, 197,025.72 and 79,111.64

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Solution

The fourth proportional to 142,774.40, 197,025.72 and 79,111.64 is: 109,172.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,774.40 : 197,025.72 = 79,111.64 : x
  2. Step 2: Convert to fraction form
    142,774.40/197,025.72 = 79,111.64/x
  3. Step 3: Cross multiply
    142,774.40x = 197,025.72 × 79,111.64
  4. Step 4: Simplify right side
    142,774.40x = 15,587,026,846.25
  5. Step 5: Solve for x
    x = 15,587,026,846.25/142,774.40
  6. Step 6: Final answer
    x = 109,172.42

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1.5x scale

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.