Home / 133,112.95-183,703.34-72,689.21

Finding the Fourth Proportional to 133,112.95, 183,703.34 and 72,689.21

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Solution

The fourth proportional to 133,112.95, 183,703.34 and 72,689.21 is: 100,315.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,112.95 : 183,703.34 = 72,689.21 : x
  2. Step 2: Convert to fraction form
    133,112.95/183,703.34 = 72,689.21/x
  3. Step 3: Cross multiply
    133,112.95x = 183,703.34 × 72,689.21
  4. Step 4: Simplify right side
    133,112.95x = 13,353,250,658.96
  5. Step 5: Solve for x
    x = 13,353,250,658.96/133,112.95
  6. Step 6: Final answer
    x = 100,315.19

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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.