Home / 102,390.91-141,300.15-57,071.81

Finding the Fourth Proportional to 102,390.91, 141,300.15 and 57,071.81

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Solution

The fourth proportional to 102,390.91, 141,300.15 and 57,071.81 is: 78,759.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,390.91 : 141,300.15 = 57,071.81 : x
  2. Step 2: Convert to fraction form
    102,390.91/141,300.15 = 57,071.81/x
  3. Step 3: Cross multiply
    102,390.91x = 141,300.15 × 57,071.81
  4. Step 4: Simplify right side
    102,390.91x = 8,064,255,313.77
  5. Step 5: Solve for x
    x = 8,064,255,313.77/102,390.91
  6. Step 6: Final answer
    x = 78,759.48

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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.