Home / 145,318.79-200,545.88-81,656.44

Finding the Fourth Proportional to 145,318.79, 200,545.88 and 81,656.44

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Solution

The fourth proportional to 145,318.79, 200,545.88 and 81,656.44 is: 112,689.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,318.79 : 200,545.88 = 81,656.44 : x
  2. Step 2: Convert to fraction form
    145,318.79/200,545.88 = 81,656.44/x
  3. Step 3: Cross multiply
    145,318.79x = 200,545.88 × 81,656.44
  4. Step 4: Simplify right side
    145,318.79x = 16,375,861,707.82
  5. Step 5: Solve for x
    x = 16,375,861,707.82/145,318.79
  6. Step 6: Final answer
    x = 112,689.22

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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.