Home / 142,130.04-196,138.14-78,466.44

Finding the Fourth Proportional to 142,130.04, 196,138.14 and 78,466.44

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Solution

The fourth proportional to 142,130.04, 196,138.14 and 78,466.44 is: 108,282.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,130.04 : 196,138.14 = 78,466.44 : x
  2. Step 2: Convert to fraction form
    142,130.04/196,138.14 = 78,466.44/x
  3. Step 3: Cross multiply
    142,130.04x = 196,138.14 × 78,466.44
  4. Step 4: Simplify right side
    142,130.04x = 15,390,261,594.02
  5. Step 5: Solve for x
    x = 15,390,261,594.02/142,130.04
  6. Step 6: Final answer
    x = 108,282.96

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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.