Home / 142,855.04-197,140.08-79,193.60

Finding the Fourth Proportional to 142,855.04, 197,140.08 and 79,193.60

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Solution

The fourth proportional to 142,855.04, 197,140.08 and 79,193.60 is: 109,287.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,855.04 : 197,140.08 = 79,193.60 : x
  2. Step 2: Convert to fraction form
    142,855.04/197,140.08 = 79,193.60/x
  3. Step 3: Cross multiply
    142,855.04x = 197,140.08 × 79,193.60
  4. Step 4: Simplify right side
    142,855.04x = 15,612,232,639.49
  5. Step 5: Solve for x
    x = 15,612,232,639.49/142,855.04
  6. Step 6: Final answer
    x = 109,287.24

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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.