Home / 142,599.08-196,785.99-78,074.18

Finding the Fourth Proportional to 142,599.08, 196,785.99 and 78,074.18

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Solution

The fourth proportional to 142,599.08, 196,785.99 and 78,074.18 is: 107,741.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,599.08 : 196,785.99 = 78,074.18 : x
  2. Step 2: Convert to fraction form
    142,599.08/196,785.99 = 78,074.18/x
  3. Step 3: Cross multiply
    142,599.08x = 196,785.99 × 78,074.18
  4. Step 4: Simplify right side
    142,599.08x = 15,363,903,820.81
  5. Step 5: Solve for x
    x = 15,363,903,820.81/142,599.08
  6. Step 6: Final answer
    x = 107,741.96

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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.