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Finding the Fourth Proportional to 142,463.70, 197,498.95 and 134,879.67

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Solution

The fourth proportional to 142,463.70, 197,498.95 and 134,879.67 is: 186,985.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,463.70 : 197,498.95 = 134,879.67 : x
  2. Step 2: Convert to fraction form
    142,463.70/197,498.95 = 134,879.67/x
  3. Step 3: Cross multiply
    142,463.70x = 197,498.95 × 134,879.67
  4. Step 4: Simplify right side
    142,463.70x = 26,638,593,201.35
  5. Step 5: Solve for x
    x = 26,638,593,201.35/142,463.70
  6. Step 6: Final answer
    x = 186,985.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.