Home / 125,191.48-187,660.86-78,477.16

Finding the Fourth Proportional to 125,191.48, 187,660.86 and 78,477.16

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Solution

The fourth proportional to 125,191.48, 187,660.86 and 78,477.16 is: 117,636.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,191.48 : 187,660.86 = 78,477.16 : x
  2. Step 2: Convert to fraction form
    125,191.48/187,660.86 = 78,477.16/x
  3. Step 3: Cross multiply
    125,191.48x = 187,660.86 × 78,477.16
  4. Step 4: Simplify right side
    125,191.48x = 14,727,091,335.96
  5. Step 5: Solve for x
    x = 14,727,091,335.96/125,191.48
  6. Step 6: Final answer
    x = 117,636.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.