Home / 142,800.30-197,128.35-102,710.70

Finding the Fourth Proportional to 142,800.30, 197,128.35 and 102,710.70

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Solution

The fourth proportional to 142,800.30, 197,128.35 and 102,710.70 is: 141,786.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,800.30 : 197,128.35 = 102,710.70 : x
  2. Step 2: Convert to fraction form
    142,800.30/197,128.35 = 102,710.70/x
  3. Step 3: Cross multiply
    142,800.30x = 197,128.35 × 102,710.70
  4. Step 4: Simplify right side
    142,800.30x = 20,247,190,818.35
  5. Step 5: Solve for x
    x = 20,247,190,818.35/142,800.30
  6. Step 6: Final answer
    x = 141,786.75

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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.