Home / 142,431.22-196,547.10-77,887.66

Finding the Fourth Proportional to 142,431.22, 196,547.10 and 77,887.66

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Solution

The fourth proportional to 142,431.22, 196,547.10 and 77,887.66 is: 107,480.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,431.22 : 196,547.10 = 77,887.66 : x
  2. Step 2: Convert to fraction form
    142,431.22/196,547.10 = 77,887.66/x
  3. Step 3: Cross multiply
    142,431.22x = 196,547.10 × 77,887.66
  4. Step 4: Simplify right side
    142,431.22x = 15,308,593,698.79
  5. Step 5: Solve for x
    x = 15,308,593,698.79/142,431.22
  6. Step 6: Final answer
    x = 107,480.61

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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.