Home / 135,246.20-186,653.70-77,887.40

Finding the Fourth Proportional to 135,246.20, 186,653.70 and 77,887.40

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Solution

The fourth proportional to 135,246.20, 186,653.70 and 77,887.40 is: 107,492.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,246.20 : 186,653.70 = 77,887.40 : x
  2. Step 2: Convert to fraction form
    135,246.20/186,653.70 = 77,887.40/x
  3. Step 3: Cross multiply
    135,246.20x = 186,653.70 × 77,887.40
  4. Step 4: Simplify right side
    135,246.20x = 14,537,970,460.11
  5. Step 5: Solve for x
    x = 14,537,970,460.11/135,246.20
  6. Step 6: Final answer
    x = 107,492.64

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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.