Home / 145,533.18-200,835.44-81,870.96

Finding the Fourth Proportional to 145,533.18, 200,835.44 and 81,870.96

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Solution

The fourth proportional to 145,533.18, 200,835.44 and 81,870.96 is: 112,981.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,533.18 : 200,835.44 = 81,870.96 : x
  2. Step 2: Convert to fraction form
    145,533.18/200,835.44 = 81,870.96/x
  3. Step 3: Cross multiply
    145,533.18x = 200,835.44 × 81,870.96
  4. Step 4: Simplify right side
    145,533.18x = 16,442,590,274.82
  5. Step 5: Solve for x
    x = 16,442,590,274.82/145,533.18
  6. Step 6: Final answer
    x = 112,981.73

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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.