Home / 112,811.08-155,638.10-67,490.36

Finding the Fourth Proportional to 112,811.08, 155,638.10 and 67,490.36

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Solution

The fourth proportional to 112,811.08, 155,638.10 and 67,490.36 is: 93,112.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,811.08 : 155,638.10 = 67,490.36 : x
  2. Step 2: Convert to fraction form
    112,811.08/155,638.10 = 67,490.36/x
  3. Step 3: Cross multiply
    112,811.08x = 155,638.10 × 67,490.36
  4. Step 4: Simplify right side
    112,811.08x = 10,504,071,398.72
  5. Step 5: Solve for x
    x = 10,504,071,398.72/112,811.08
  6. Step 6: Final answer
    x = 93,112.05

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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.