Home / 134,805.12-186,032.96-74,378.40

Finding the Fourth Proportional to 134,805.12, 186,032.96 and 74,378.40

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Solution

The fourth proportional to 134,805.12, 186,032.96 and 74,378.40 is: 102,643.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,805.12 : 186,032.96 = 74,378.40 : x
  2. Step 2: Convert to fraction form
    134,805.12/186,032.96 = 74,378.40/x
  3. Step 3: Cross multiply
    134,805.12x = 186,032.96 × 74,378.40
  4. Step 4: Simplify right side
    134,805.12x = 13,836,833,912.06
  5. Step 5: Solve for x
    x = 13,836,833,912.06/134,805.12
  6. Step 6: Final answer
    x = 102,643.24

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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.