Home / 105,432.20-145,496.34-57,685.74

Finding the Fourth Proportional to 105,432.20, 145,496.34 and 57,685.74

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Solution

The fourth proportional to 105,432.20, 145,496.34 and 57,685.74 is: 79,606.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,432.20 : 145,496.34 = 57,685.74 : x
  2. Step 2: Convert to fraction form
    105,432.20/145,496.34 = 57,685.74/x
  3. Step 3: Cross multiply
    105,432.20x = 145,496.34 × 57,685.74
  4. Step 4: Simplify right side
    105,432.20x = 8,393,064,040.19
  5. Step 5: Solve for x
    x = 8,393,064,040.19/105,432.20
  6. Step 6: Final answer
    x = 79,606.27

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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.