Home / 136,538.60-188,429.63-76,109.67

Finding the Fourth Proportional to 136,538.60, 188,429.63 and 76,109.67

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Solution

The fourth proportional to 136,538.60, 188,429.63 and 76,109.67 is: 105,034.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,538.60 : 188,429.63 = 76,109.67 : x
  2. Step 2: Convert to fraction form
    136,538.60/188,429.63 = 76,109.67/x
  3. Step 3: Cross multiply
    136,538.60x = 188,429.63 × 76,109.67
  4. Step 4: Simplify right side
    136,538.60x = 14,341,316,576.97
  5. Step 5: Solve for x
    x = 14,341,316,576.97/136,538.60
  6. Step 6: Final answer
    x = 105,034.89

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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.