Home / 136,688.20-205,032.30-114,915.40

Finding the Fourth Proportional to 136,688.20, 205,032.30 and 114,915.40

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Solution

The fourth proportional to 136,688.20, 205,032.30 and 114,915.40 is: 172,373.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,688.20 : 205,032.30 = 114,915.40 : x
  2. Step 2: Convert to fraction form
    136,688.20/205,032.30 = 114,915.40/x
  3. Step 3: Cross multiply
    136,688.20x = 205,032.30 × 114,915.40
  4. Step 4: Simplify right side
    136,688.20x = 23,561,368,767.42
  5. Step 5: Solve for x
    x = 23,561,368,767.42/136,688.20
  6. Step 6: Final answer
    x = 172,373.10

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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.