Home / 185,705.42-256,270.95-105,130.85

Finding the Fourth Proportional to 185,705.42, 256,270.95 and 105,130.85

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Solution

The fourth proportional to 185,705.42, 256,270.95 and 105,130.85 is: 145,079.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,705.42 : 256,270.95 = 105,130.85 : x
  2. Step 2: Convert to fraction form
    185,705.42/256,270.95 = 105,130.85/x
  3. Step 3: Cross multiply
    185,705.42x = 256,270.95 × 105,130.85
  4. Step 4: Simplify right side
    185,705.42x = 26,941,981,522.45
  5. Step 5: Solve for x
    x = 26,941,981,522.45/185,705.42
  6. Step 6: Final answer
    x = 145,079.14

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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.