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Finding the Fourth Proportional to 104,291.92, 143,922.16 and 56,545.12

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Solution

The fourth proportional to 104,291.92, 143,922.16 and 56,545.12 is: 78,031.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,291.92 : 143,922.16 = 56,545.12 : x
  2. Step 2: Convert to fraction form
    104,291.92/143,922.16 = 56,545.12/x
  3. Step 3: Cross multiply
    104,291.92x = 143,922.16 × 56,545.12
  4. Step 4: Simplify right side
    104,291.92x = 8,138,095,807.86
  5. Step 5: Solve for x
    x = 8,138,095,807.86/104,291.92
  6. Step 6: Final answer
    x = 78,031.89

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1.5x scale

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.