Home / 120,290.29-165,995.48-66,570.28

Finding the Fourth Proportional to 120,290.29, 165,995.48 and 66,570.28

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Solution

The fourth proportional to 120,290.29, 165,995.48 and 66,570.28 is: 91,864.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,290.29 : 165,995.48 = 66,570.28 : x
  2. Step 2: Convert to fraction form
    120,290.29/165,995.48 = 66,570.28/x
  3. Step 3: Cross multiply
    120,290.29x = 165,995.48 × 66,570.28
  4. Step 4: Simplify right side
    120,290.29x = 11,050,365,333.77
  5. Step 5: Solve for x
    x = 11,050,365,333.77/120,290.29
  6. Step 6: Final answer
    x = 91,864.15

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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.