Home / 105,566.16-145,681.68-57,819.12

Finding the Fourth Proportional to 105,566.16, 145,681.68 and 57,819.12

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Solution

The fourth proportional to 105,566.16, 145,681.68 and 57,819.12 is: 79,790.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,566.16 : 145,681.68 = 57,819.12 : x
  2. Step 2: Convert to fraction form
    105,566.16/145,681.68 = 57,819.12/x
  3. Step 3: Cross multiply
    105,566.16x = 145,681.68 × 57,819.12
  4. Step 4: Simplify right side
    105,566.16x = 8,423,186,537.72
  5. Step 5: Solve for x
    x = 8,423,186,537.72/105,566.16
  6. Step 6: Final answer
    x = 79,790.59

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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.