Home / 126,130.20-189,281.70-69,970.20

Finding the Fourth Proportional to 126,130.20, 189,281.70 and 69,970.20

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Solution

The fourth proportional to 126,130.20, 189,281.70 and 69,970.20 is: 105,003.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,130.20 : 189,281.70 = 69,970.20 : x
  2. Step 2: Convert to fraction form
    126,130.20/189,281.70 = 69,970.20/x
  3. Step 3: Cross multiply
    126,130.20x = 189,281.70 × 69,970.20
  4. Step 4: Simplify right side
    126,130.20x = 13,244,078,405.34
  5. Step 5: Solve for x
    x = 13,244,078,405.34/126,130.20
  6. Step 6: Final answer
    x = 105,003.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.