Home / 136,848.51-188,849.16-76,420.22

Finding the Fourth Proportional to 136,848.51, 188,849.16 and 76,420.22

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Solution

The fourth proportional to 136,848.51, 188,849.16 and 76,420.22 is: 105,458.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,848.51 : 188,849.16 = 76,420.22 : x
  2. Step 2: Convert to fraction form
    136,848.51/188,849.16 = 76,420.22/x
  3. Step 3: Cross multiply
    136,848.51x = 188,849.16 × 76,420.22
  4. Step 4: Simplify right side
    136,848.51x = 14,431,893,409.77
  5. Step 5: Solve for x
    x = 14,431,893,409.77/136,848.51
  6. Step 6: Final answer
    x = 105,458.90

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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.