Home / 209,386.40-289,004.55-118,795.39

Finding the Fourth Proportional to 209,386.40, 289,004.55 and 118,795.39

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Solution

The fourth proportional to 209,386.40, 289,004.55 and 118,795.39 is: 163,966.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,386.40 : 289,004.55 = 118,795.39 : x
  2. Step 2: Convert to fraction form
    209,386.40/289,004.55 = 118,795.39/x
  3. Step 3: Cross multiply
    209,386.40x = 289,004.55 × 118,795.39
  4. Step 4: Simplify right side
    209,386.40x = 34,332,409,035.76
  5. Step 5: Solve for x
    x = 34,332,409,035.76/209,386.40
  6. Step 6: Final answer
    x = 163,966.76

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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.