Home / 137,142.02-189,372.80-86,239.93

Finding the Fourth Proportional to 137,142.02, 189,372.80 and 86,239.93

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Solution

The fourth proportional to 137,142.02, 189,372.80 and 86,239.93 is: 119,084.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,142.02 : 189,372.80 = 86,239.93 : x
  2. Step 2: Convert to fraction form
    137,142.02/189,372.80 = 86,239.93/x
  3. Step 3: Cross multiply
    137,142.02x = 189,372.80 × 86,239.93
  4. Step 4: Simplify right side
    137,142.02x = 16,331,497,015.90
  5. Step 5: Solve for x
    x = 16,331,497,015.90/137,142.02
  6. Step 6: Final answer
    x = 119,084.56

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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.