Home / 149,830.65-206,772.58-86,168.50

Finding the Fourth Proportional to 149,830.65, 206,772.58 and 86,168.50

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Solution

The fourth proportional to 149,830.65, 206,772.58 and 86,168.50 is: 118,916.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,830.65 : 206,772.58 = 86,168.50 : x
  2. Step 2: Convert to fraction form
    149,830.65/206,772.58 = 86,168.50/x
  3. Step 3: Cross multiply
    149,830.65x = 206,772.58 × 86,168.50
  4. Step 4: Simplify right side
    149,830.65x = 17,817,281,595.02
  5. Step 5: Solve for x
    x = 17,817,281,595.02/149,830.65
  6. Step 6: Final answer
    x = 118,916.14

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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.