Home / 189,756.66-284,602.02-71,428.92

Finding the Fourth Proportional to 189,756.66, 284,602.02 and 71,428.92

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Solution

The fourth proportional to 189,756.66, 284,602.02 and 71,428.92 is: 107,130.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,756.66 : 284,602.02 = 71,428.92 : x
  2. Step 2: Convert to fraction form
    189,756.66/284,602.02 = 71,428.92/x
  3. Step 3: Cross multiply
    189,756.66x = 284,602.02 × 71,428.92
  4. Step 4: Simplify right side
    189,756.66x = 20,328,814,918.42
  5. Step 5: Solve for x
    x = 20,328,814,918.42/189,756.66
  6. Step 6: Final answer
    x = 107,130.97

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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.