Home / 142,369.06-196,459.68-78,698.20

Finding the Fourth Proportional to 142,369.06, 196,459.68 and 78,698.20

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Solution

The fourth proportional to 142,369.06, 196,459.68 and 78,698.20 is: 108,598.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,369.06 : 196,459.68 = 78,698.20 : x
  2. Step 2: Convert to fraction form
    142,369.06/196,459.68 = 78,698.20/x
  3. Step 3: Cross multiply
    142,369.06x = 196,459.68 × 78,698.20
  4. Step 4: Simplify right side
    142,369.06x = 15,461,023,188.58
  5. Step 5: Solve for x
    x = 15,461,023,188.58/142,369.06
  6. Step 6: Final answer
    x = 108,598.20

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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.