Home / 191,941.40-287,825.70-86,706.20

Finding the Fourth Proportional to 191,941.40, 287,825.70 and 86,706.20

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Solution

The fourth proportional to 191,941.40, 287,825.70 and 86,706.20 is: 130,020.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,941.40 : 287,825.70 = 86,706.20 : x
  2. Step 2: Convert to fraction form
    191,941.40/287,825.70 = 86,706.20/x
  3. Step 3: Cross multiply
    191,941.40x = 287,825.70 × 86,706.20
  4. Step 4: Simplify right side
    191,941.40x = 24,956,272,709.34
  5. Step 5: Solve for x
    x = 24,956,272,709.34/191,941.40
  6. Step 6: Final answer
    x = 130,020.27

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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.