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Finding the Fourth Proportional to 112,907.50, 155,807.06 and 65,176.22

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Solution

The fourth proportional to 112,907.50, 155,807.06 and 65,176.22 is: 89,940.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,907.50 : 155,807.06 = 65,176.22 : x
  2. Step 2: Convert to fraction form
    112,907.50/155,807.06 = 65,176.22/x
  3. Step 3: Cross multiply
    112,907.50x = 155,807.06 × 65,176.22
  4. Step 4: Simplify right side
    112,907.50x = 10,154,915,220.11
  5. Step 5: Solve for x
    x = 10,154,915,220.11/112,907.50
  6. Step 6: Final answer
    x = 89,940.13

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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.