Home / 105,740.48-145,908.41-60,421.40

Finding the Fourth Proportional to 105,740.48, 145,908.41 and 60,421.40

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Solution

The fourth proportional to 105,740.48, 145,908.41 and 60,421.40 is: 83,373.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,740.48 : 145,908.41 = 60,421.40 : x
  2. Step 2: Convert to fraction form
    105,740.48/145,908.41 = 60,421.40/x
  3. Step 3: Cross multiply
    105,740.48x = 145,908.41 × 60,421.40
  4. Step 4: Simplify right side
    105,740.48x = 8,815,990,403.97
  5. Step 5: Solve for x
    x = 8,815,990,403.97/105,740.48
  6. Step 6: Final answer
    x = 83,373.85

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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.