Home / 143,447.29-215,025.63-72,154.51

Finding the Fourth Proportional to 143,447.29, 215,025.63 and 72,154.51

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Solution

The fourth proportional to 143,447.29, 215,025.63 and 72,154.51 is: 108,158.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,447.29 : 215,025.63 = 72,154.51 : x
  2. Step 2: Convert to fraction form
    143,447.29/215,025.63 = 72,154.51/x
  3. Step 3: Cross multiply
    143,447.29x = 215,025.63 × 72,154.51
  4. Step 4: Simplify right side
    143,447.29x = 15,515,068,970.09
  5. Step 5: Solve for x
    x = 15,515,068,970.09/143,447.29
  6. Step 6: Final answer
    x = 108,158.68

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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.