Home / 121,218.06-167,117.90-84,870.64

Finding the Fourth Proportional to 121,218.06, 167,117.90 and 84,870.64

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Solution

The fourth proportional to 121,218.06, 167,117.90 and 84,870.64 is: 117,007.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,218.06 : 167,117.90 = 84,870.64 : x
  2. Step 2: Convert to fraction form
    121,218.06/167,117.90 = 84,870.64/x
  3. Step 3: Cross multiply
    121,218.06x = 167,117.90 × 84,870.64
  4. Step 4: Simplify right side
    121,218.06x = 14,183,402,092.31
  5. Step 5: Solve for x
    x = 14,183,402,092.31/121,218.06
  6. Step 6: Final answer
    x = 117,007.33

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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.