Home / 130,834.99-180,575.85-77,116.87

Finding the Fourth Proportional to 130,834.99, 180,575.85 and 77,116.87

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Solution

The fourth proportional to 130,834.99, 180,575.85 and 77,116.87 is: 106,435.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,834.99 : 180,575.85 = 77,116.87 : x
  2. Step 2: Convert to fraction form
    130,834.99/180,575.85 = 77,116.87/x
  3. Step 3: Cross multiply
    130,834.99x = 180,575.85 × 77,116.87
  4. Step 4: Simplify right side
    130,834.99x = 13,925,444,349.59
  5. Step 5: Solve for x
    x = 13,925,444,349.59/130,834.99
  6. Step 6: Final answer
    x = 106,435.17

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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.