Home / 135,417.86-186,860.74-78,056.52

Finding the Fourth Proportional to 135,417.86, 186,860.74 and 78,056.52

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Solution

The fourth proportional to 135,417.86, 186,860.74 and 78,056.52 is: 107,708.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,417.86 : 186,860.74 = 78,056.52 : x
  2. Step 2: Convert to fraction form
    135,417.86/186,860.74 = 78,056.52/x
  3. Step 3: Cross multiply
    135,417.86x = 186,860.74 × 78,056.52
  4. Step 4: Simplify right side
    135,417.86x = 14,585,699,089.02
  5. Step 5: Solve for x
    x = 14,585,699,089.02/135,417.86
  6. Step 6: Final answer
    x = 107,708.83

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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.