Home / 135,312.72-186,686.04-78,677.52

Finding the Fourth Proportional to 135,312.72, 186,686.04 and 78,677.52

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Solution

The fourth proportional to 135,312.72, 186,686.04 and 78,677.52 is: 108,548.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,312.72 : 186,686.04 = 78,677.52 : x
  2. Step 2: Convert to fraction form
    135,312.72/186,686.04 = 78,677.52/x
  3. Step 3: Cross multiply
    135,312.72x = 186,686.04 × 78,677.52
  4. Step 4: Simplify right side
    135,312.72x = 14,687,994,645.82
  5. Step 5: Solve for x
    x = 14,687,994,645.82/135,312.72
  6. Step 6: Final answer
    x = 108,548.51

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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.