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Finding the Fourth Proportional to 101,490.96, 140,055.52 and 56,166.30

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Solution

The fourth proportional to 101,490.96, 140,055.52 and 56,166.30 is: 77,508.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,490.96 : 140,055.52 = 56,166.30 : x
  2. Step 2: Convert to fraction form
    101,490.96/140,055.52 = 56,166.30/x
  3. Step 3: Cross multiply
    101,490.96x = 140,055.52 × 56,166.30
  4. Step 4: Simplify right side
    101,490.96x = 7,866,400,352.98
  5. Step 5: Solve for x
    x = 7,866,400,352.98/101,490.96
  6. Step 6: Final answer
    x = 77,508.38

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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.