Home / 136,403.58-188,315-91,158.18

Finding the Fourth Proportional to 136,403.58, 188,315 and 91,158.18

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Solution

The fourth proportional to 136,403.58, 188,315 and 91,158.18 is: 125,850.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,403.58 : 188,315 = 91,158.18 : x
  2. Step 2: Convert to fraction form
    136,403.58/188,315 = 91,158.18/x
  3. Step 3: Cross multiply
    136,403.58x = 188,315 × 91,158.18
  4. Step 4: Simplify right side
    136,403.58x = 17,166,452,666.70
  5. Step 5: Solve for x
    x = 17,166,452,666.70/136,403.58
  6. Step 6: Final answer
    x = 125,850.46

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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.