Home / 142,053.28-196,051.60-85,495.20

Finding the Fourth Proportional to 142,053.28, 196,051.60 and 85,495.20

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Solution

The fourth proportional to 142,053.28, 196,051.60 and 85,495.20 is: 117,994.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,053.28 : 196,051.60 = 85,495.20 : x
  2. Step 2: Convert to fraction form
    142,053.28/196,051.60 = 85,495.20/x
  3. Step 3: Cross multiply
    142,053.28x = 196,051.60 × 85,495.20
  4. Step 4: Simplify right side
    142,053.28x = 16,761,470,752.32
  5. Step 5: Solve for x
    x = 16,761,470,752.32/142,053.28
  6. Step 6: Final answer
    x = 117,994.25

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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.