Home / 142,582.16-196,742.79-78,919.81

Finding the Fourth Proportional to 142,582.16, 196,742.79 and 78,919.81

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Solution

The fourth proportional to 142,582.16, 196,742.79 and 78,919.81 is: 108,897.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,582.16 : 196,742.79 = 78,919.81 : x
  2. Step 2: Convert to fraction form
    142,582.16/196,742.79 = 78,919.81/x
  3. Step 3: Cross multiply
    142,582.16x = 196,742.79 × 78,919.81
  4. Step 4: Simplify right side
    142,582.16x = 15,526,903,113.81
  5. Step 5: Solve for x
    x = 15,526,903,113.81/142,582.16
  6. Step 6: Final answer
    x = 108,897.94

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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.