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Finding the Fourth Proportional to 105,572.75, 145,700.90 and 60,257.61

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Solution

The fourth proportional to 105,572.75, 145,700.90 and 60,257.61 is: 83,161.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,572.75 : 145,700.90 = 60,257.61 : x
  2. Step 2: Convert to fraction form
    105,572.75/145,700.90 = 60,257.61/x
  3. Step 3: Cross multiply
    105,572.75x = 145,700.90 × 60,257.61
  4. Step 4: Simplify right side
    105,572.75x = 8,779,587,707.56
  5. Step 5: Solve for x
    x = 8,779,587,707.56/105,572.75
  6. Step 6: Final answer
    x = 83,161.50

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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.