Home / 105,425.09-145,484.12-57,678.83

Finding the Fourth Proportional to 105,425.09, 145,484.12 and 57,678.83

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Solution

The fourth proportional to 105,425.09, 145,484.12 and 57,678.83 is: 79,595.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,425.09 : 145,484.12 = 57,678.83 : x
  2. Step 2: Convert to fraction form
    105,425.09/145,484.12 = 57,678.83/x
  3. Step 3: Cross multiply
    105,425.09x = 145,484.12 × 57,678.83
  4. Step 4: Simplify right side
    105,425.09x = 8,391,353,825.18
  5. Step 5: Solve for x
    x = 8,391,353,825.18/105,425.09
  6. Step 6: Final answer
    x = 79,595.42

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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.