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Finding the Fourth Proportional to 143,482.51, 198,005.86 and 79,820.31

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Solution

The fourth proportional to 143,482.51, 198,005.86 and 79,820.31 is: 110,152.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,482.51 : 198,005.86 = 79,820.31 : x
  2. Step 2: Convert to fraction form
    143,482.51/198,005.86 = 79,820.31/x
  3. Step 3: Cross multiply
    143,482.51x = 198,005.86 × 79,820.31
  4. Step 4: Simplify right side
    143,482.51x = 15,804,888,136.99
  5. Step 5: Solve for x
    x = 15,804,888,136.99/143,482.51
  6. Step 6: Final answer
    x = 110,152.02

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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.