Home / 112,739.40-155,605.95-70,289.73

Finding the Fourth Proportional to 112,739.40, 155,605.95 and 70,289.73

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Solution

The fourth proportional to 112,739.40, 155,605.95 and 70,289.73 is: 97,015.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,739.40 : 155,605.95 = 70,289.73 : x
  2. Step 2: Convert to fraction form
    112,739.40/155,605.95 = 70,289.73/x
  3. Step 3: Cross multiply
    112,739.40x = 155,605.95 × 70,289.73
  4. Step 4: Simplify right side
    112,739.40x = 10,937,500,211.89
  5. Step 5: Solve for x
    x = 10,937,500,211.89/112,739.40
  6. Step 6: Final answer
    x = 97,015.77

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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.