Home / 105,649.32-145,812.12-67,425.36

Finding the Fourth Proportional to 105,649.32, 145,812.12 and 67,425.36

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Solution

The fourth proportional to 105,649.32, 145,812.12 and 67,425.36 is: 93,057.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,649.32 : 145,812.12 = 67,425.36 : x
  2. Step 2: Convert to fraction form
    105,649.32/145,812.12 = 67,425.36/x
  3. Step 3: Cross multiply
    105,649.32x = 145,812.12 × 67,425.36
  4. Step 4: Simplify right side
    105,649.32x = 9,831,434,683.36
  5. Step 5: Solve for x
    x = 9,831,434,683.36/105,649.32
  6. Step 6: Final answer
    x = 93,057.25

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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.