Home / 124,715.81-172,111.61-68,130.83

Finding the Fourth Proportional to 124,715.81, 172,111.61 and 68,130.83

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Solution

The fourth proportional to 124,715.81, 172,111.61 and 68,130.83 is: 94,022.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,715.81 : 172,111.61 = 68,130.83 : x
  2. Step 2: Convert to fraction form
    124,715.81/172,111.61 = 68,130.83/x
  3. Step 3: Cross multiply
    124,715.81x = 172,111.61 × 68,130.83
  4. Step 4: Simplify right side
    124,715.81x = 11,726,106,931.56
  5. Step 5: Solve for x
    x = 11,726,106,931.56/124,715.81
  6. Step 6: Final answer
    x = 94,022.62

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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.