Home / 142,181.84-196,210.28-78,519.36

Finding the Fourth Proportional to 142,181.84, 196,210.28 and 78,519.36

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Solution

The fourth proportional to 142,181.84, 196,210.28 and 78,519.36 is: 108,356.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,181.84 : 196,210.28 = 78,519.36 : x
  2. Step 2: Convert to fraction form
    142,181.84/196,210.28 = 78,519.36/x
  3. Step 3: Cross multiply
    142,181.84x = 196,210.28 × 78,519.36
  4. Step 4: Simplify right side
    142,181.84x = 15,406,305,611.02
  5. Step 5: Solve for x
    x = 15,406,305,611.02/142,181.84
  6. Step 6: Final answer
    x = 108,356.35

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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.