Home / 100,160.15-138,215.76-54,829.45

Finding the Fourth Proportional to 100,160.15, 138,215.76 and 54,829.45

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Solution

The fourth proportional to 100,160.15, 138,215.76 and 54,829.45 is: 75,661.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,160.15 : 138,215.76 = 54,829.45 : x
  2. Step 2: Convert to fraction form
    100,160.15/138,215.76 = 54,829.45/x
  3. Step 3: Cross multiply
    100,160.15x = 138,215.76 × 54,829.45
  4. Step 4: Simplify right side
    100,160.15x = 7,578,294,069.29
  5. Step 5: Solve for x
    x = 7,578,294,069.29/100,160.15
  6. Step 6: Final answer
    x = 75,661.77

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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.