Home / 142,146.14-196,160.40-78,482.57

Finding the Fourth Proportional to 142,146.14, 196,160.40 and 78,482.57

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Solution

The fourth proportional to 142,146.14, 196,160.40 and 78,482.57 is: 108,305.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,146.14 : 196,160.40 = 78,482.57 : x
  2. Step 2: Convert to fraction form
    142,146.14/196,160.40 = 78,482.57/x
  3. Step 3: Cross multiply
    142,146.14x = 196,160.40 × 78,482.57
  4. Step 4: Simplify right side
    142,146.14x = 15,395,171,343.43
  5. Step 5: Solve for x
    x = 15,395,171,343.43/142,146.14
  6. Step 6: Final answer
    x = 108,305.24

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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.