Home / 133,115.59-183,703.81-72,689.39

Finding the Fourth Proportional to 133,115.59, 183,703.81 and 72,689.39

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Solution

The fourth proportional to 133,115.59, 183,703.81 and 72,689.39 is: 100,313.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,115.59 : 183,703.81 = 72,689.39 : x
  2. Step 2: Convert to fraction form
    133,115.59/183,703.81 = 72,689.39/x
  3. Step 3: Cross multiply
    133,115.59x = 183,703.81 × 72,689.39
  4. Step 4: Simplify right side
    133,115.59x = 13,353,317,889.58
  5. Step 5: Solve for x
    x = 13,353,317,889.58/133,115.59
  6. Step 6: Final answer
    x = 100,313.70

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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.