Home / 129,436.99-178,602.27-72,075.62

Finding the Fourth Proportional to 129,436.99, 178,602.27 and 72,075.62

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Solution

The fourth proportional to 129,436.99, 178,602.27 and 72,075.62 is: 99,452.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,436.99 : 178,602.27 = 72,075.62 : x
  2. Step 2: Convert to fraction form
    129,436.99/178,602.27 = 72,075.62/x
  3. Step 3: Cross multiply
    129,436.99x = 178,602.27 × 72,075.62
  4. Step 4: Simplify right side
    129,436.99x = 12,872,869,519.88
  5. Step 5: Solve for x
    x = 12,872,869,519.88/129,436.99
  6. Step 6: Final answer
    x = 99,452.79

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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.