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Finding the Fourth Proportional to 103,492.90, 155,266.67 and 56,086.93

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Solution

The fourth proportional to 103,492.90, 155,266.67 and 56,086.93 is: 84,145.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,492.90 : 155,266.67 = 56,086.93 : x
  2. Step 2: Convert to fraction form
    103,492.90/155,266.67 = 56,086.93/x
  3. Step 3: Cross multiply
    103,492.90x = 155,266.67 × 56,086.93
  4. Step 4: Simplify right side
    103,492.90x = 8,708,430,851.62
  5. Step 5: Solve for x
    x = 8,708,430,851.62/103,492.90
  6. Step 6: Final answer
    x = 84,145.20

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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.