Home / 103,530.48-142,881.18-61,080.72

Finding the Fourth Proportional to 103,530.48, 142,881.18 and 61,080.72

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Solution

The fourth proportional to 103,530.48, 142,881.18 and 61,080.72 is: 84,296.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,530.48 : 142,881.18 = 61,080.72 : x
  2. Step 2: Convert to fraction form
    103,530.48/142,881.18 = 61,080.72/x
  3. Step 3: Cross multiply
    103,530.48x = 142,881.18 × 61,080.72
  4. Step 4: Simplify right side
    103,530.48x = 8,727,285,348.85
  5. Step 5: Solve for x
    x = 8,727,285,348.85/103,530.48
  6. Step 6: Final answer
    x = 84,296.77

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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.