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Finding the Fourth Proportional to 103,677.60, 155,516.40 and 82,941.60

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Solution

The fourth proportional to 103,677.60, 155,516.40 and 82,941.60 is: 124,412.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,677.60 : 155,516.40 = 82,941.60 : x
  2. Step 2: Convert to fraction form
    103,677.60/155,516.40 = 82,941.60/x
  3. Step 3: Cross multiply
    103,677.60x = 155,516.40 × 82,941.60
  4. Step 4: Simplify right side
    103,677.60x = 12,898,779,042.24
  5. Step 5: Solve for x
    x = 12,898,779,042.24/103,677.60
  6. Step 6: Final answer
    x = 124,412.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.