Home / 105,206.30-145,182.38-57,459.84

Finding the Fourth Proportional to 105,206.30, 145,182.38 and 57,459.84

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Solution

The fourth proportional to 105,206.30, 145,182.38 and 57,459.84 is: 79,293.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,206.30 : 145,182.38 = 57,459.84 : x
  2. Step 2: Convert to fraction form
    105,206.30/145,182.38 = 57,459.84/x
  3. Step 3: Cross multiply
    105,206.30x = 145,182.38 × 57,459.84
  4. Step 4: Simplify right side
    105,206.30x = 8,342,156,325.62
  5. Step 5: Solve for x
    x = 8,342,156,325.62/105,206.30
  6. Step 6: Final answer
    x = 79,293.32

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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.