Home / 117,686.40-162,498.84-72,385.38

Finding the Fourth Proportional to 117,686.40, 162,498.84 and 72,385.38

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Solution

The fourth proportional to 117,686.40, 162,498.84 and 72,385.38 is: 99,948.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,686.40 : 162,498.84 = 72,385.38 : x
  2. Step 2: Convert to fraction form
    117,686.40/162,498.84 = 72,385.38/x
  3. Step 3: Cross multiply
    117,686.40x = 162,498.84 × 72,385.38
  4. Step 4: Simplify right side
    117,686.40x = 11,762,540,282.96
  5. Step 5: Solve for x
    x = 11,762,540,282.96/117,686.40
  6. Step 6: Final answer
    x = 99,948.17

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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.