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Finding the Fourth Proportional to 98,998.94, 147,954.57 and 72,400.97

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Solution

The fourth proportional to 98,998.94, 147,954.57 and 72,400.97 is: 108,203.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,998.94 : 147,954.57 = 72,400.97 : x
  2. Step 2: Convert to fraction form
    98,998.94/147,954.57 = 72,400.97/x
  3. Step 3: Cross multiply
    98,998.94x = 147,954.57 × 72,400.97
  4. Step 4: Simplify right side
    98,998.94x = 10,712,054,482.32
  5. Step 5: Solve for x
    x = 10,712,054,482.32/98,998.94
  6. Step 6: Final answer
    x = 108,203.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.