Home / 112,138.20-168,207.30-70,666.20

Finding the Fourth Proportional to 112,138.20, 168,207.30 and 70,666.20

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Solution

The fourth proportional to 112,138.20, 168,207.30 and 70,666.20 is: 105,999.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,138.20 : 168,207.30 = 70,666.20 : x
  2. Step 2: Convert to fraction form
    112,138.20/168,207.30 = 70,666.20/x
  3. Step 3: Cross multiply
    112,138.20x = 168,207.30 × 70,666.20
  4. Step 4: Simplify right side
    112,138.20x = 11,886,570,703.26
  5. Step 5: Solve for x
    x = 11,886,570,703.26/112,138.20
  6. Step 6: Final answer
    x = 105,999.30

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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.