Home / 102,475.73-153,771.92-81,830.45

Finding the Fourth Proportional to 102,475.73, 153,771.92 and 81,830.45

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Solution

The fourth proportional to 102,475.73, 153,771.92 and 81,830.45 is: 122,792.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,475.73 : 153,771.92 = 81,830.45 : x
  2. Step 2: Convert to fraction form
    102,475.73/153,771.92 = 81,830.45/x
  3. Step 3: Cross multiply
    102,475.73x = 153,771.92 × 81,830.45
  4. Step 4: Simplify right side
    102,475.73x = 12,583,225,693.11
  5. Step 5: Solve for x
    x = 12,583,225,693.11/102,475.73
  6. Step 6: Final answer
    x = 122,792.25

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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.