Home / 105,154.08-145,112.96-67,428.48

Finding the Fourth Proportional to 105,154.08, 145,112.96 and 67,428.48

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Solution

The fourth proportional to 105,154.08, 145,112.96 and 67,428.48 is: 93,051.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,154.08 : 145,112.96 = 67,428.48 : x
  2. Step 2: Convert to fraction form
    105,154.08/145,112.96 = 67,428.48/x
  3. Step 3: Cross multiply
    105,154.08x = 145,112.96 × 67,428.48
  4. Step 4: Simplify right side
    105,154.08x = 9,784,746,321.10
  5. Step 5: Solve for x
    x = 9,784,746,321.10/105,154.08
  6. Step 6: Final answer
    x = 93,051.51

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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.