Home / 86,913.50-130,149.72-72,836.51

Finding the Fourth Proportional to 86,913.50, 130,149.72 and 72,836.51

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Solution

The fourth proportional to 86,913.50, 130,149.72 and 72,836.51 is: 109,069.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,913.50 : 130,149.72 = 72,836.51 : x
  2. Step 2: Convert to fraction form
    86,913.50/130,149.72 = 72,836.51/x
  3. Step 3: Cross multiply
    86,913.50x = 130,149.72 × 72,836.51
  4. Step 4: Simplify right side
    86,913.50x = 9,479,650,731.53
  5. Step 5: Solve for x
    x = 9,479,650,731.53/86,913.50
  6. Step 6: Final answer
    x = 109,069.95

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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.