Home / 136,938.74-188,956.67-76,501.87

Finding the Fourth Proportional to 136,938.74, 188,956.67 and 76,501.87

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Solution

The fourth proportional to 136,938.74, 188,956.67 and 76,501.87 is: 105,562.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,938.74 : 188,956.67 = 76,501.87 : x
  2. Step 2: Convert to fraction form
    136,938.74/188,956.67 = 76,501.87/x
  3. Step 3: Cross multiply
    136,938.74x = 188,956.67 × 76,501.87
  4. Step 4: Simplify right side
    136,938.74x = 14,455,538,603.97
  5. Step 5: Solve for x
    x = 14,455,538,603.97/136,938.74
  6. Step 6: Final answer
    x = 105,562.08

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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.