Home / 131,128.60-196,547.10-72,006.70

Finding the Fourth Proportional to 131,128.60, 196,547.10 and 72,006.70

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Solution

The fourth proportional to 131,128.60, 196,547.10 and 72,006.70 is: 107,929.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,128.60 : 196,547.10 = 72,006.70 : x
  2. Step 2: Convert to fraction form
    131,128.60/196,547.10 = 72,006.70/x
  3. Step 3: Cross multiply
    131,128.60x = 196,547.10 × 72,006.70
  4. Step 4: Simplify right side
    131,128.60x = 14,152,708,065.57
  5. Step 5: Solve for x
    x = 14,152,708,065.57/131,128.60
  6. Step 6: Final answer
    x = 107,929.99

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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.