Home / 106,543.37-147,085.11-77,830.79

Finding the Fourth Proportional to 106,543.37, 147,085.11 and 77,830.79

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Solution

The fourth proportional to 106,543.37, 147,085.11 and 77,830.79 is: 107,446.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,543.37 : 147,085.11 = 77,830.79 : x
  2. Step 2: Convert to fraction form
    106,543.37/147,085.11 = 77,830.79/x
  3. Step 3: Cross multiply
    106,543.37x = 147,085.11 × 77,830.79
  4. Step 4: Simplify right side
    106,543.37x = 11,447,749,573.11
  5. Step 5: Solve for x
    x = 11,447,749,573.11/106,543.37
  6. Step 6: Final answer
    x = 107,446.86

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1.5x scale

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.