Home / 102,420.10-141,350.23-57,105.46

Finding the Fourth Proportional to 102,420.10, 141,350.23 and 57,105.46

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Solution

The fourth proportional to 102,420.10, 141,350.23 and 57,105.46 is: 78,811.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,420.10 : 141,350.23 = 57,105.46 : x
  2. Step 2: Convert to fraction form
    102,420.10/141,350.23 = 57,105.46/x
  3. Step 3: Cross multiply
    102,420.10x = 141,350.23 × 57,105.46
  4. Step 4: Simplify right side
    102,420.10x = 8,071,869,905.26
  5. Step 5: Solve for x
    x = 8,071,869,905.26/102,420.10
  6. Step 6: Final answer
    x = 78,811.38

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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.