Home / 105,740.86-145,908.92-60,421.76

Finding the Fourth Proportional to 105,740.86, 145,908.92 and 60,421.76

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Solution

The fourth proportional to 105,740.86, 145,908.92 and 60,421.76 is: 83,374.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,740.86 : 145,908.92 = 60,421.76 : x
  2. Step 2: Convert to fraction form
    105,740.86/145,908.92 = 60,421.76/x
  3. Step 3: Cross multiply
    105,740.86x = 145,908.92 × 60,421.76
  4. Step 4: Simplify right side
    105,740.86x = 8,816,073,746.10
  5. Step 5: Solve for x
    x = 8,816,073,746.10/105,740.86
  6. Step 6: Final answer
    x = 83,374.33

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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.