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Finding the Fourth Proportional to 115,051.80, 158,820.48 and 77,347.92

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Solution

The fourth proportional to 115,051.80, 158,820.48 and 77,347.92 is: 106,773.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,051.80 : 158,820.48 = 77,347.92 : x
  2. Step 2: Convert to fraction form
    115,051.80/158,820.48 = 77,347.92/x
  3. Step 3: Cross multiply
    115,051.80x = 158,820.48 × 77,347.92
  4. Step 4: Simplify right side
    115,051.80x = 12,284,433,781.40
  5. Step 5: Solve for x
    x = 12,284,433,781.40/115,051.80
  6. Step 6: Final answer
    x = 106,773.07

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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.