Home / 130,929.66-180,688.86-77,216.94

Finding the Fourth Proportional to 130,929.66, 180,688.86 and 77,216.94

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Solution

The fourth proportional to 130,929.66, 180,688.86 and 77,216.94 is: 106,562.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,929.66 : 180,688.86 = 77,216.94 : x
  2. Step 2: Convert to fraction form
    130,929.66/180,688.86 = 77,216.94/x
  3. Step 3: Cross multiply
    130,929.66x = 180,688.86 × 77,216.94
  4. Step 4: Simplify right side
    130,929.66x = 13,952,240,861.29
  5. Step 5: Solve for x
    x = 13,952,240,861.29/130,929.66
  6. Step 6: Final answer
    x = 106,562.87

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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.