Home / 133,108.43-183,688.23-72,678.88

Finding the Fourth Proportional to 133,108.43, 183,688.23 and 72,678.88

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Solution

The fourth proportional to 133,108.43, 183,688.23 and 72,678.88 is: 100,296.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,108.43 : 183,688.23 = 72,678.88 : x
  2. Step 2: Convert to fraction form
    133,108.43/183,688.23 = 72,678.88/x
  3. Step 3: Cross multiply
    133,108.43x = 183,688.23 × 72,678.88
  4. Step 4: Simplify right side
    133,108.43x = 13,350,254,825.58
  5. Step 5: Solve for x
    x = 13,350,254,825.58/133,108.43
  6. Step 6: Final answer
    x = 100,296.09

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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.