Home / 112,603.09-155,448.49-64,847.21

Finding the Fourth Proportional to 112,603.09, 155,448.49 and 64,847.21

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Solution

The fourth proportional to 112,603.09, 155,448.49 and 64,847.21 is: 89,521.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,603.09 : 155,448.49 = 64,847.21 : x
  2. Step 2: Convert to fraction form
    112,603.09/155,448.49 = 64,847.21/x
  3. Step 3: Cross multiply
    112,603.09x = 155,448.49 × 64,847.21
  4. Step 4: Simplify right side
    112,603.09x = 10,080,400,875.21
  5. Step 5: Solve for x
    x = 10,080,400,875.21/112,603.09
  6. Step 6: Final answer
    x = 89,521.53

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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.