Home / 152,411.42-228,399.35-85,711.57

Finding the Fourth Proportional to 152,411.42, 228,399.35 and 85,711.57

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Solution

The fourth proportional to 152,411.42, 228,399.35 and 85,711.57 is: 128,444.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,411.42 : 228,399.35 = 85,711.57 : x
  2. Step 2: Convert to fraction form
    152,411.42/228,399.35 = 85,711.57/x
  3. Step 3: Cross multiply
    152,411.42x = 228,399.35 × 85,711.57
  4. Step 4: Simplify right side
    152,411.42x = 19,576,465,875.92
  5. Step 5: Solve for x
    x = 19,576,465,875.92/152,411.42
  6. Step 6: Final answer
    x = 128,444.87

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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.