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Finding the Fourth Proportional to 121,258.70, 181,888.05 and 112,401.35

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Solution

The fourth proportional to 121,258.70, 181,888.05 and 112,401.35 is: 168,602.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,258.70 : 181,888.05 = 112,401.35 : x
  2. Step 2: Convert to fraction form
    121,258.70/181,888.05 = 112,401.35/x
  3. Step 3: Cross multiply
    121,258.70x = 181,888.05 × 112,401.35
  4. Step 4: Simplify right side
    121,258.70x = 20,444,462,368.87
  5. Step 5: Solve for x
    x = 20,444,462,368.87/121,258.70
  6. Step 6: Final answer
    x = 168,602.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.