Home / 218,139.12-301,030.16-122,646.20

Finding the Fourth Proportional to 218,139.12, 301,030.16 and 122,646.20

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Solution

The fourth proportional to 218,139.12, 301,030.16 and 122,646.20 is: 169,250.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,139.12 : 301,030.16 = 122,646.20 : x
  2. Step 2: Convert to fraction form
    218,139.12/301,030.16 = 122,646.20/x
  3. Step 3: Cross multiply
    218,139.12x = 301,030.16 × 122,646.20
  4. Step 4: Simplify right side
    218,139.12x = 36,920,203,091.01
  5. Step 5: Solve for x
    x = 36,920,203,091.01/218,139.12
  6. Step 6: Final answer
    x = 169,250.72

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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.