Home / 112,243.50-154,968.90-86,705.40

Finding the Fourth Proportional to 112,243.50, 154,968.90 and 86,705.40

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Solution

The fourth proportional to 112,243.50, 154,968.90 and 86,705.40 is: 119,709.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,243.50 : 154,968.90 = 86,705.40 : x
  2. Step 2: Convert to fraction form
    112,243.50/154,968.90 = 86,705.40/x
  3. Step 3: Cross multiply
    112,243.50x = 154,968.90 × 86,705.40
  4. Step 4: Simplify right side
    112,243.50x = 13,436,640,462.06
  5. Step 5: Solve for x
    x = 13,436,640,462.06/112,243.50
  6. Step 6: Final answer
    x = 119,709.74

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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.