Home / 130,315.13-195,216.40-85,806.95

Finding the Fourth Proportional to 130,315.13, 195,216.40 and 85,806.95

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Solution

The fourth proportional to 130,315.13, 195,216.40 and 85,806.95 is: 128,541.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,315.13 : 195,216.40 = 85,806.95 : x
  2. Step 2: Convert to fraction form
    130,315.13/195,216.40 = 85,806.95/x
  3. Step 3: Cross multiply
    130,315.13x = 195,216.40 × 85,806.95
  4. Step 4: Simplify right side
    130,315.13x = 16,750,923,246.49
  5. Step 5: Solve for x
    x = 16,750,923,246.49/130,315.13
  6. Step 6: Final answer
    x = 128,541.66

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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.