Home / 142,940.90-197,244.50-79,277.34

Finding the Fourth Proportional to 142,940.90, 197,244.50 and 79,277.34

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Solution

The fourth proportional to 142,940.90, 197,244.50 and 79,277.34 is: 109,395.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,940.90 : 197,244.50 = 79,277.34 : x
  2. Step 2: Convert to fraction form
    142,940.90/197,244.50 = 79,277.34/x
  3. Step 3: Cross multiply
    142,940.90x = 197,244.50 × 79,277.34
  4. Step 4: Simplify right side
    142,940.90x = 15,637,019,289.63
  5. Step 5: Solve for x
    x = 15,637,019,289.63/142,940.90
  6. Step 6: Final answer
    x = 109,395.00

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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.