Home / 105,807.62-146,014.21-57,409.35

Finding the Fourth Proportional to 105,807.62, 146,014.21 and 57,409.35

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Solution

The fourth proportional to 105,807.62, 146,014.21 and 57,409.35 is: 79,224.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,807.62 : 146,014.21 = 57,409.35 : x
  2. Step 2: Convert to fraction form
    105,807.62/146,014.21 = 57,409.35/x
  3. Step 3: Cross multiply
    105,807.62x = 146,014.21 × 57,409.35
  4. Step 4: Simplify right side
    105,807.62x = 8,382,580,886.86
  5. Step 5: Solve for x
    x = 8,382,580,886.86/105,807.62
  6. Step 6: Final answer
    x = 79,224.74

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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.