Home / 123,716,015.39-170,725,123.42-68,711,915.63

Finding the Fourth Proportional to 123,716,015.39, 170,725,123.42 and 68,711,915.63

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Solution

The fourth proportional to 123,716,015.39, 170,725,123.42 and 68,711,915.63 is: 94,820,789.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,716,015.39 : 170,725,123.42 = 68,711,915.63 : x
  2. Step 2: Convert to fraction form
    123,716,015.39/170,725,123.42 = 68,711,915.63/x
  3. Step 3: Cross multiply
    123,716,015.39x = 170,725,123.42 × 68,711,915.63
  4. Step 4: Simplify right side
    123,716,015.39x = 11,730,850,275,330,970
  5. Step 5: Solve for x
    x = 11,730,850,275,330,970/123,716,015.39
  6. Step 6: Final answer
    x = 94,820,789.68

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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.