Home / 105,180.84-145,149.36-67,455

Finding the Fourth Proportional to 105,180.84, 145,149.36 and 67,455

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Solution

The fourth proportional to 105,180.84, 145,149.36 and 67,455 is: 93,087.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,180.84 : 145,149.36 = 67,455 : x
  2. Step 2: Convert to fraction form
    105,180.84/145,149.36 = 67,455/x
  3. Step 3: Cross multiply
    105,180.84x = 145,149.36 × 67,455
  4. Step 4: Simplify right side
    105,180.84x = 9,791,050,078.80
  5. Step 5: Solve for x
    x = 9,791,050,078.80/105,180.84
  6. Step 6: Final answer
    x = 93,087.77

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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.