Home / 103,730.40-143,142.12-61,292.88

Finding the Fourth Proportional to 103,730.40, 143,142.12 and 61,292.88

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Solution

The fourth proportional to 103,730.40, 143,142.12 and 61,292.88 is: 84,580.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,730.40 : 143,142.12 = 61,292.88 : x
  2. Step 2: Convert to fraction form
    103,730.40/143,142.12 = 61,292.88/x
  3. Step 3: Cross multiply
    103,730.40x = 143,142.12 × 61,292.88
  4. Step 4: Simplify right side
    103,730.40x = 8,773,592,784.11
  5. Step 5: Solve for x
    x = 8,773,592,784.11/103,730.40
  6. Step 6: Final answer
    x = 84,580.73

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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.