Home / 178,056.51-266,749.16-138,421.05

Finding the Fourth Proportional to 178,056.51, 266,749.16 and 138,421.05

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Solution

The fourth proportional to 178,056.51, 266,749.16 and 138,421.05 is: 207,370.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,056.51 : 266,749.16 = 138,421.05 : x
  2. Step 2: Convert to fraction form
    178,056.51/266,749.16 = 138,421.05/x
  3. Step 3: Cross multiply
    178,056.51x = 266,749.16 × 138,421.05
  4. Step 4: Simplify right side
    178,056.51x = 36,923,698,121.71
  5. Step 5: Solve for x
    x = 36,923,698,121.71/178,056.51
  6. Step 6: Final answer
    x = 207,370.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.