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Finding the Fourth Proportional to 105,609.50, 145,705.23 and 60,254.90

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Solution

The fourth proportional to 105,609.50, 145,705.23 and 60,254.90 is: 83,131.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,609.50 : 145,705.23 = 60,254.90 : x
  2. Step 2: Convert to fraction form
    105,609.50/145,705.23 = 60,254.90/x
  3. Step 3: Cross multiply
    105,609.50x = 145,705.23 × 60,254.90
  4. Step 4: Simplify right side
    105,609.50x = 8,779,454,063.13
  5. Step 5: Solve for x
    x = 8,779,454,063.13/105,609.50
  6. Step 6: Final answer
    x = 83,131.29

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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.