Home / 101,478.02-140,046.68-56,157.90

Finding the Fourth Proportional to 101,478.02, 140,046.68 and 56,157.90

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Solution

The fourth proportional to 101,478.02, 140,046.68 and 56,157.90 is: 77,501.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,478.02 : 140,046.68 = 56,157.90 : x
  2. Step 2: Convert to fraction form
    101,478.02/140,046.68 = 56,157.90/x
  3. Step 3: Cross multiply
    101,478.02x = 140,046.68 × 56,157.90
  4. Step 4: Simplify right side
    101,478.02x = 7,864,727,450.77
  5. Step 5: Solve for x
    x = 7,864,727,450.77/101,478.02
  6. Step 6: Final answer
    x = 77,501.78

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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.