Home / 83,091.20-124,636.80-64,428.80

Finding the Fourth Proportional to 83,091.20, 124,636.80 and 64,428.80

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Solution

The fourth proportional to 83,091.20, 124,636.80 and 64,428.80 is: 96,643.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,091.20 : 124,636.80 = 64,428.80 : x
  2. Step 2: Convert to fraction form
    83,091.20/124,636.80 = 64,428.80/x
  3. Step 3: Cross multiply
    83,091.20x = 124,636.80 × 64,428.80
  4. Step 4: Simplify right side
    83,091.20x = 8,030,199,459.84
  5. Step 5: Solve for x
    x = 8,030,199,459.84/83,091.20
  6. Step 6: Final answer
    x = 96,643.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.