Home / 98,648.31-136,148.01-55,636.64

Finding the Fourth Proportional to 98,648.31, 136,148.01 and 55,636.64

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Solution

The fourth proportional to 98,648.31, 136,148.01 and 55,636.64 is: 76,786.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,648.31 : 136,148.01 = 55,636.64 : x
  2. Step 2: Convert to fraction form
    98,648.31/136,148.01 = 55,636.64/x
  3. Step 3: Cross multiply
    98,648.31x = 136,148.01 × 55,636.64
  4. Step 4: Simplify right side
    98,648.31x = 7,574,817,440.26
  5. Step 5: Solve for x
    x = 7,574,817,440.26/98,648.31
  6. Step 6: Final answer
    x = 76,786.08

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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.