Home / 105,740.28-145,908.06-60,421.20

Finding the Fourth Proportional to 105,740.28, 145,908.06 and 60,421.20

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Solution

The fourth proportional to 105,740.28, 145,908.06 and 60,421.20 is: 83,373.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,740.28 : 145,908.06 = 60,421.20 : x
  2. Step 2: Convert to fraction form
    105,740.28/145,908.06 = 60,421.20/x
  3. Step 3: Cross multiply
    105,740.28x = 145,908.06 × 60,421.20
  4. Step 4: Simplify right side
    105,740.28x = 8,815,940,074.87
  5. Step 5: Solve for x
    x = 8,815,940,074.87/105,740.28
  6. Step 6: Final answer
    x = 83,373.53

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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.