Home / 142,862.70-197,152.92-78,330.60

Finding the Fourth Proportional to 142,862.70, 197,152.92 and 78,330.60

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Solution

The fourth proportional to 142,862.70, 197,152.92 and 78,330.60 is: 108,097.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,862.70 : 197,152.92 = 78,330.60 : x
  2. Step 2: Convert to fraction form
    142,862.70/197,152.92 = 78,330.60/x
  3. Step 3: Cross multiply
    142,862.70x = 197,152.92 × 78,330.60
  4. Step 4: Simplify right side
    142,862.70x = 15,443,106,515.35
  5. Step 5: Solve for x
    x = 15,443,106,515.35/142,862.70
  6. Step 6: Final answer
    x = 108,097.54

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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.