Home / 134,855.20-186,055.80-87,136.66

Finding the Fourth Proportional to 134,855.20, 186,055.80 and 87,136.66

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Solution

The fourth proportional to 134,855.20, 186,055.80 and 87,136.66 is: 120,219.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,855.20 : 186,055.80 = 87,136.66 : x
  2. Step 2: Convert to fraction form
    134,855.20/186,055.80 = 87,136.66/x
  3. Step 3: Cross multiply
    134,855.20x = 186,055.80 × 87,136.66
  4. Step 4: Simplify right side
    134,855.20x = 16,212,280,985.63
  5. Step 5: Solve for x
    x = 16,212,280,985.63/134,855.20
  6. Step 6: Final answer
    x = 120,219.92

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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.