Home / 112,475.19-155,208.38-64,720.83

Finding the Fourth Proportional to 112,475.19, 155,208.38 and 64,720.83

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Solution

The fourth proportional to 112,475.19, 155,208.38 and 64,720.83 is: 89,310.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,475.19 : 155,208.38 = 64,720.83 : x
  2. Step 2: Convert to fraction form
    112,475.19/155,208.38 = 64,720.83/x
  3. Step 3: Cross multiply
    112,475.19x = 155,208.38 × 64,720.83
  4. Step 4: Simplify right side
    112,475.19x = 10,045,214,852.95
  5. Step 5: Solve for x
    x = 10,045,214,852.95/112,475.19
  6. Step 6: Final answer
    x = 89,310.49

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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.