Home / 134,145.13-185,111.57-76,784.90

Finding the Fourth Proportional to 134,145.13, 185,111.57 and 76,784.90

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Solution

The fourth proportional to 134,145.13, 185,111.57 and 76,784.90 is: 105,958.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,145.13 : 185,111.57 = 76,784.90 : x
  2. Step 2: Convert to fraction form
    134,145.13/185,111.57 = 76,784.90/x
  3. Step 3: Cross multiply
    134,145.13x = 185,111.57 × 76,784.90
  4. Step 4: Simplify right side
    134,145.13x = 14,213,773,391.29
  5. Step 5: Solve for x
    x = 14,213,773,391.29/134,145.13
  6. Step 6: Final answer
    x = 105,958.18

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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.