Home / 112,370.12-155,102.04-64,638.84

Finding the Fourth Proportional to 112,370.12, 155,102.04 and 64,638.84

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Solution

The fourth proportional to 112,370.12, 155,102.04 and 64,638.84 is: 89,219.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,370.12 : 155,102.04 = 64,638.84 : x
  2. Step 2: Convert to fraction form
    112,370.12/155,102.04 = 64,638.84/x
  3. Step 3: Cross multiply
    112,370.12x = 155,102.04 × 64,638.84
  4. Step 4: Simplify right side
    112,370.12x = 10,025,615,947.23
  5. Step 5: Solve for x
    x = 10,025,615,947.23/112,370.12
  6. Step 6: Final answer
    x = 89,219.59

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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.