Home / 145,364.32-200,592.78-81,711.70

Finding the Fourth Proportional to 145,364.32, 200,592.78 and 81,711.70

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Solution

The fourth proportional to 145,364.32, 200,592.78 and 81,711.70 is: 112,756.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,364.32 : 200,592.78 = 81,711.70 : x
  2. Step 2: Convert to fraction form
    145,364.32/200,592.78 = 81,711.70/x
  3. Step 3: Cross multiply
    145,364.32x = 200,592.78 × 81,711.70
  4. Step 4: Simplify right side
    145,364.32x = 16,390,777,061.53
  5. Step 5: Solve for x
    x = 16,390,777,061.53/145,364.32
  6. Step 6: Final answer
    x = 112,756.54

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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.