Home / 112,684.85-168,778.11-77,061.74

Finding the Fourth Proportional to 112,684.85, 168,778.11 and 77,061.74

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Solution

The fourth proportional to 112,684.85, 168,778.11 and 77,061.74 is: 115,422.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,684.85 : 168,778.11 = 77,061.74 : x
  2. Step 2: Convert to fraction form
    112,684.85/168,778.11 = 77,061.74/x
  3. Step 3: Cross multiply
    112,684.85x = 168,778.11 × 77,061.74
  4. Step 4: Simplify right side
    112,684.85x = 13,006,334,830.51
  5. Step 5: Solve for x
    x = 13,006,334,830.51/112,684.85
  6. Step 6: Final answer
    x = 115,422.22

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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.