Home / 151,820.37-209,483.55-87,312.06

Finding the Fourth Proportional to 151,820.37, 209,483.55 and 87,312.06

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Solution

The fourth proportional to 151,820.37, 209,483.55 and 87,312.06 is: 120,474.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,820.37 : 209,483.55 = 87,312.06 : x
  2. Step 2: Convert to fraction form
    151,820.37/209,483.55 = 87,312.06/x
  3. Step 3: Cross multiply
    151,820.37x = 209,483.55 × 87,312.06
  4. Step 4: Simplify right side
    151,820.37x = 18,290,440,286.61
  5. Step 5: Solve for x
    x = 18,290,440,286.61/151,820.37
  6. Step 6: Final answer
    x = 120,474.22

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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.