Home / 102,011.81-140,773.55-56,688.66

Finding the Fourth Proportional to 102,011.81, 140,773.55 and 56,688.66

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Solution

The fourth proportional to 102,011.81, 140,773.55 and 56,688.66 is: 78,228.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,011.81 : 140,773.55 = 56,688.66 : x
  2. Step 2: Convert to fraction form
    102,011.81/140,773.55 = 56,688.66/x
  3. Step 3: Cross multiply
    102,011.81x = 140,773.55 × 56,688.66
  4. Step 4: Simplify right side
    102,011.81x = 7,980,263,629.50
  5. Step 5: Solve for x
    x = 7,980,263,629.50/102,011.81
  6. Step 6: Final answer
    x = 78,228.82

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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.