Home / 103,580.60-142,935.72-61,123.64

Finding the Fourth Proportional to 103,580.60, 142,935.72 and 61,123.64

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Solution

The fourth proportional to 103,580.60, 142,935.72 and 61,123.64 is: 84,347.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,580.60 : 142,935.72 = 61,123.64 : x
  2. Step 2: Convert to fraction form
    103,580.60/142,935.72 = 61,123.64/x
  3. Step 3: Cross multiply
    103,580.60x = 142,935.72 × 61,123.64
  4. Step 4: Simplify right side
    103,580.60x = 8,736,751,492.42
  5. Step 5: Solve for x
    x = 8,736,751,492.42/103,580.60
  6. Step 6: Final answer
    x = 84,347.37

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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.