Home / 142,431.36-196,547.26-77,887.78

Finding the Fourth Proportional to 142,431.36, 196,547.26 and 77,887.78

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Solution

The fourth proportional to 142,431.36, 196,547.26 and 77,887.78 is: 107,480.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,431.36 : 196,547.26 = 77,887.78 : x
  2. Step 2: Convert to fraction form
    142,431.36/196,547.26 = 77,887.78/x
  3. Step 3: Cross multiply
    142,431.36x = 196,547.26 × 77,887.78
  4. Step 4: Simplify right side
    142,431.36x = 15,308,629,746.48
  5. Step 5: Solve for x
    x = 15,308,629,746.48/142,431.36
  6. Step 6: Final answer
    x = 107,480.75

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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.