Home / 112,983.22-155,910.12-64,590.40

Finding the Fourth Proportional to 112,983.22, 155,910.12 and 64,590.40

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Solution

The fourth proportional to 112,983.22, 155,910.12 and 64,590.40 is: 89,130.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,983.22 : 155,910.12 = 64,590.40 : x
  2. Step 2: Convert to fraction form
    112,983.22/155,910.12 = 64,590.40/x
  3. Step 3: Cross multiply
    112,983.22x = 155,910.12 × 64,590.40
  4. Step 4: Simplify right side
    112,983.22x = 10,070,297,014.85
  5. Step 5: Solve for x
    x = 10,070,297,014.85/112,983.22
  6. Step 6: Final answer
    x = 89,130.91

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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.