Home / 143,585.64-215,378.58-68,688.12

Finding the Fourth Proportional to 143,585.64, 215,378.58 and 68,688.12

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Solution

The fourth proportional to 143,585.64, 215,378.58 and 68,688.12 is: 103,032.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,585.64 : 215,378.58 = 68,688.12 : x
  2. Step 2: Convert to fraction form
    143,585.64/215,378.58 = 68,688.12/x
  3. Step 3: Cross multiply
    143,585.64x = 215,378.58 × 68,688.12
  4. Step 4: Simplify right side
    143,585.64x = 14,793,949,748.47
  5. Step 5: Solve for x
    x = 14,793,949,748.47/143,585.64
  6. Step 6: Final answer
    x = 103,032.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.