Home / 112,122.62-154,740.15-83,779.10

Finding the Fourth Proportional to 112,122.62, 154,740.15 and 83,779.10

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Solution

The fourth proportional to 112,122.62, 154,740.15 and 83,779.10 is: 115,623.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,122.62 : 154,740.15 = 83,779.10 : x
  2. Step 2: Convert to fraction form
    112,122.62/154,740.15 = 83,779.10/x
  3. Step 3: Cross multiply
    112,122.62x = 154,740.15 × 83,779.10
  4. Step 4: Simplify right side
    112,122.62x = 12,963,990,500.87
  5. Step 5: Solve for x
    x = 12,963,990,500.87/112,122.62
  6. Step 6: Final answer
    x = 115,623.33

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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.