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Finding the Fourth Proportional to 90,193.86, 124,505.86 and 56,219.26

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Solution

The fourth proportional to 90,193.86, 124,505.86 and 56,219.26 is: 77,606.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,193.86 : 124,505.86 = 56,219.26 : x
  2. Step 2: Convert to fraction form
    90,193.86/124,505.86 = 56,219.26/x
  3. Step 3: Cross multiply
    90,193.86x = 124,505.86 × 56,219.26
  4. Step 4: Simplify right side
    90,193.86x = 6,999,627,314.86
  5. Step 5: Solve for x
    x = 6,999,627,314.86/90,193.86
  6. Step 6: Final answer
    x = 77,606.47

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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.