Home / 112,239.57-154,947.75-86,688.58

Finding the Fourth Proportional to 112,239.57, 154,947.75 and 86,688.58

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Solution

The fourth proportional to 112,239.57, 154,947.75 and 86,688.58 is: 119,674.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,239.57 : 154,947.75 = 86,688.58 : x
  2. Step 2: Convert to fraction form
    112,239.57/154,947.75 = 86,688.58/x
  3. Step 3: Cross multiply
    112,239.57x = 154,947.75 × 86,688.58
  4. Step 4: Simplify right side
    112,239.57x = 13,432,200,670.25
  5. Step 5: Solve for x
    x = 13,432,200,670.25/112,239.57
  6. Step 6: Final answer
    x = 119,674.37

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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.