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Finding the Fourth Proportional to 102,549.92, 141,518.92 and 56,609.59

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Solution

The fourth proportional to 102,549.92, 141,518.92 and 56,609.59 is: 78,121.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,549.92 : 141,518.92 = 56,609.59 : x
  2. Step 2: Convert to fraction form
    102,549.92/141,518.92 = 56,609.59/x
  3. Step 3: Cross multiply
    102,549.92x = 141,518.92 × 56,609.59
  4. Step 4: Simplify right side
    102,549.92x = 8,011,328,038.44
  5. Step 5: Solve for x
    x = 8,011,328,038.44/102,549.92
  6. Step 6: Final answer
    x = 78,121.25

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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.