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Finding the Fourth Proportional to 103,502.90, 155,254.35 and 97,379.30

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Solution

The fourth proportional to 103,502.90, 155,254.35 and 97,379.30 is: 146,068.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,502.90 : 155,254.35 = 97,379.30 : x
  2. Step 2: Convert to fraction form
    103,502.90/155,254.35 = 97,379.30/x
  3. Step 3: Cross multiply
    103,502.90x = 155,254.35 × 97,379.30
  4. Step 4: Simplify right side
    103,502.90x = 15,118,559,924.96
  5. Step 5: Solve for x
    x = 15,118,559,924.96/103,502.90
  6. Step 6: Final answer
    x = 146,068.95

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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.