Home / 133,111.77-183,701.70-72,688.05

Finding the Fourth Proportional to 133,111.77, 183,701.70 and 72,688.05

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Solution

The fourth proportional to 133,111.77, 183,701.70 and 72,688.05 is: 100,313.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,111.77 : 183,701.70 = 72,688.05 : x
  2. Step 2: Convert to fraction form
    133,111.77/183,701.70 = 72,688.05/x
  3. Step 3: Cross multiply
    133,111.77x = 183,701.70 × 72,688.05
  4. Step 4: Simplify right side
    133,111.77x = 13,352,918,354.69
  5. Step 5: Solve for x
    x = 13,352,918,354.69/133,111.77
  6. Step 6: Final answer
    x = 100,313.58

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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.