Home / 112,686.87-155,503.07-61,698.67

Finding the Fourth Proportional to 112,686.87, 155,503.07 and 61,698.67

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Solution

The fourth proportional to 112,686.87, 155,503.07 and 61,698.67 is: 85,141.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,686.87 : 155,503.07 = 61,698.67 : x
  2. Step 2: Convert to fraction form
    112,686.87/155,503.07 = 61,698.67/x
  3. Step 3: Cross multiply
    112,686.87x = 155,503.07 × 61,698.67
  4. Step 4: Simplify right side
    112,686.87x = 9,594,332,599.92
  5. Step 5: Solve for x
    x = 9,594,332,599.92/112,686.87
  6. Step 6: Final answer
    x = 85,141.53

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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.