Home / 147,736.12-203,867.50-87,312.40

Finding the Fourth Proportional to 147,736.12, 203,867.50 and 87,312.40

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Solution

The fourth proportional to 147,736.12, 203,867.50 and 87,312.40 is: 120,486.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,736.12 : 203,867.50 = 87,312.40 : x
  2. Step 2: Convert to fraction form
    147,736.12/203,867.50 = 87,312.40/x
  3. Step 3: Cross multiply
    147,736.12x = 203,867.50 × 87,312.40
  4. Step 4: Simplify right side
    147,736.12x = 17,800,160,707
  5. Step 5: Solve for x
    x = 17,800,160,707/147,736.12
  6. Step 6: Final answer
    x = 120,486.18

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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.