Home / 142,774.40-197,028.48-79,116.32

Finding the Fourth Proportional to 142,774.40, 197,028.48 and 79,116.32

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Solution

The fourth proportional to 142,774.40, 197,028.48 and 79,116.32 is: 109,180.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,774.40 : 197,028.48 = 79,116.32 : x
  2. Step 2: Convert to fraction form
    142,774.40/197,028.48 = 79,116.32/x
  3. Step 3: Cross multiply
    142,774.40x = 197,028.48 × 79,116.32
  4. Step 4: Simplify right side
    142,774.40x = 15,588,168,272.79
  5. Step 5: Solve for x
    x = 15,588,168,272.79/142,774.40
  6. Step 6: Final answer
    x = 109,180.42

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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.