Home / 86,915.50-130,152.72-72,838.51

Finding the Fourth Proportional to 86,915.50, 130,152.72 and 72,838.51

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Solution

The fourth proportional to 86,915.50, 130,152.72 and 72,838.51 is: 109,072.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,915.50 : 130,152.72 = 72,838.51 : x
  2. Step 2: Convert to fraction form
    86,915.50/130,152.72 = 72,838.51/x
  3. Step 3: Cross multiply
    86,915.50x = 130,152.72 × 72,838.51
  4. Step 4: Simplify right side
    86,915.50x = 9,480,130,197.25
  5. Step 5: Solve for x
    x = 9,480,130,197.25/86,915.50
  6. Step 6: Final answer
    x = 109,072.95

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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.