Home / 121,900.42-168,154.86-70,907.41

Finding the Fourth Proportional to 121,900.42, 168,154.86 and 70,907.41

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Solution

The fourth proportional to 121,900.42, 168,154.86 and 70,907.41 is: 97,812.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,900.42 : 168,154.86 = 70,907.41 : x
  2. Step 2: Convert to fraction form
    121,900.42/168,154.86 = 70,907.41/x
  3. Step 3: Cross multiply
    121,900.42x = 168,154.86 × 70,907.41
  4. Step 4: Simplify right side
    121,900.42x = 11,923,425,601.51
  5. Step 5: Solve for x
    x = 11,923,425,601.51/121,900.42
  6. Step 6: Final answer
    x = 97,812.83

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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.