Home / 102,298.96-141,157.86-56,970.64

Finding the Fourth Proportional to 102,298.96, 141,157.86 and 56,970.64

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Solution

The fourth proportional to 102,298.96, 141,157.86 and 56,970.64 is: 78,611.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,298.96 : 141,157.86 = 56,970.64 : x
  2. Step 2: Convert to fraction form
    102,298.96/141,157.86 = 56,970.64/x
  3. Step 3: Cross multiply
    102,298.96x = 141,157.86 × 56,970.64
  4. Step 4: Simplify right side
    102,298.96x = 8,041,853,625.23
  5. Step 5: Solve for x
    x = 8,041,853,625.23/102,298.96
  6. Step 6: Final answer
    x = 78,611.29

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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.