Home / 189,258.51-261,176.98-103,217.63

Finding the Fourth Proportional to 189,258.51, 261,176.98 and 103,217.63

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Solution

The fourth proportional to 189,258.51, 261,176.98 and 103,217.63 is: 142,440.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,258.51 : 261,176.98 = 103,217.63 : x
  2. Step 2: Convert to fraction form
    189,258.51/261,176.98 = 103,217.63/x
  3. Step 3: Cross multiply
    189,258.51x = 261,176.98 × 103,217.63
  4. Step 4: Simplify right side
    189,258.51x = 26,958,068,886.16
  5. Step 5: Solve for x
    x = 26,958,068,886.16/189,258.51
  6. Step 6: Final answer
    x = 142,440.46

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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.