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Finding the Fourth Proportional to 172,079.36, 258,109.76 and 53,737.12

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Solution

The fourth proportional to 172,079.36, 258,109.76 and 53,737.12 is: 80,602.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,079.36 : 258,109.76 = 53,737.12 : x
  2. Step 2: Convert to fraction form
    172,079.36/258,109.76 = 53,737.12/x
  3. Step 3: Cross multiply
    172,079.36x = 258,109.76 × 53,737.12
  4. Step 4: Simplify right side
    172,079.36x = 13,870,075,146.29
  5. Step 5: Solve for x
    x = 13,870,075,146.29/172,079.36
  6. Step 6: Final answer
    x = 80,602.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.