Home / 98,615.36-136,055.94-56,143.82

Finding the Fourth Proportional to 98,615.36, 136,055.94 and 56,143.82

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Solution

The fourth proportional to 98,615.36, 136,055.94 and 56,143.82 is: 77,459.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,615.36 : 136,055.94 = 56,143.82 : x
  2. Step 2: Convert to fraction form
    98,615.36/136,055.94 = 56,143.82/x
  3. Step 3: Cross multiply
    98,615.36x = 136,055.94 × 56,143.82
  4. Step 4: Simplify right side
    98,615.36x = 7,638,700,205.29
  5. Step 5: Solve for x
    x = 7,638,700,205.29/98,615.36
  6. Step 6: Final answer
    x = 77,459.54

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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.