Home / 120,421.32-166,023.88-103,606.19

Finding the Fourth Proportional to 120,421.32, 166,023.88 and 103,606.19

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Solution

The fourth proportional to 120,421.32, 166,023.88 and 103,606.19 is: 142,841.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,421.32 : 166,023.88 = 103,606.19 : x
  2. Step 2: Convert to fraction form
    120,421.32/166,023.88 = 103,606.19/x
  3. Step 3: Cross multiply
    120,421.32x = 166,023.88 × 103,606.19
  4. Step 4: Simplify right side
    120,421.32x = 17,201,101,655.82
  5. Step 5: Solve for x
    x = 17,201,101,655.82/120,421.32
  6. Step 6: Final answer
    x = 142,841.00

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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.