Home / 101,931.84-140,661.15-56,612.75

Finding the Fourth Proportional to 101,931.84, 140,661.15 and 56,612.75

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Solution

The fourth proportional to 101,931.84, 140,661.15 and 56,612.75 is: 78,122.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,931.84 : 140,661.15 = 56,612.75 : x
  2. Step 2: Convert to fraction form
    101,931.84/140,661.15 = 56,612.75/x
  3. Step 3: Cross multiply
    101,931.84x = 140,661.15 × 56,612.75
  4. Step 4: Simplify right side
    101,931.84x = 7,963,213,816.36
  5. Step 5: Solve for x
    x = 7,963,213,816.36/101,931.84
  6. Step 6: Final answer
    x = 78,122.93

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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.