Home / 148,635.81-205,002.77-103,312.89

Finding the Fourth Proportional to 148,635.81, 205,002.77 and 103,312.89

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Solution

The fourth proportional to 148,635.81, 205,002.77 and 103,312.89 is: 142,492.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,635.81 : 205,002.77 = 103,312.89 : x
  2. Step 2: Convert to fraction form
    148,635.81/205,002.77 = 103,312.89/x
  3. Step 3: Cross multiply
    148,635.81x = 205,002.77 × 103,312.89
  4. Step 4: Simplify right side
    148,635.81x = 21,179,428,110.14
  5. Step 5: Solve for x
    x = 21,179,428,110.14/148,635.81
  6. Step 6: Final answer
    x = 142,492.10

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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.