Home / 213,031.40-294,009.35-122,387.18

Finding the Fourth Proportional to 213,031.40, 294,009.35 and 122,387.18

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Solution

The fourth proportional to 213,031.40, 294,009.35 and 122,387.18 is: 168,909.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,031.40 : 294,009.35 = 122,387.18 : x
  2. Step 2: Convert to fraction form
    213,031.40/294,009.35 = 122,387.18/x
  3. Step 3: Cross multiply
    213,031.40x = 294,009.35 × 122,387.18
  4. Step 4: Simplify right side
    213,031.40x = 35,982,973,158.15
  5. Step 5: Solve for x
    x = 35,982,973,158.15/213,031.40
  6. Step 6: Final answer
    x = 168,909.25

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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.