Home / 105,903.23-146,109.93-67,685.15

Finding the Fourth Proportional to 105,903.23, 146,109.93 and 67,685.15

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Solution

The fourth proportional to 105,903.23, 146,109.93 and 67,685.15 is: 93,382.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,903.23 : 146,109.93 = 67,685.15 : x
  2. Step 2: Convert to fraction form
    105,903.23/146,109.93 = 67,685.15/x
  3. Step 3: Cross multiply
    105,903.23x = 146,109.93 × 67,685.15
  4. Step 4: Simplify right side
    105,903.23x = 9,889,472,331.79
  5. Step 5: Solve for x
    x = 9,889,472,331.79/105,903.23
  6. Step 6: Final answer
    x = 93,382.16

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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.