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Finding the Fourth Proportional to 101,753.02, 140,409.15 and 56,430.21

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Solution

The fourth proportional to 101,753.02, 140,409.15 and 56,430.21 is: 77,868.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,753.02 : 140,409.15 = 56,430.21 : x
  2. Step 2: Convert to fraction form
    101,753.02/140,409.15 = 56,430.21/x
  3. Step 3: Cross multiply
    101,753.02x = 140,409.15 × 56,430.21
  4. Step 4: Simplify right side
    101,753.02x = 7,923,317,820.42
  5. Step 5: Solve for x
    x = 7,923,317,820.42/101,753.02
  6. Step 6: Final answer
    x = 77,868.13

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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.