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Finding the Fourth Proportional to 104,126.64, 143,678.52 and 61,678.32

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Solution

The fourth proportional to 104,126.64, 143,678.52 and 61,678.32 is: 85,106.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,126.64 : 143,678.52 = 61,678.32 : x
  2. Step 2: Convert to fraction form
    104,126.64/143,678.52 = 61,678.32/x
  3. Step 3: Cross multiply
    104,126.64x = 143,678.52 × 61,678.32
  4. Step 4: Simplify right side
    104,126.64x = 8,861,849,733.69
  5. Step 5: Solve for x
    x = 8,861,849,733.69/104,126.64
  6. Step 6: Final answer
    x = 85,106.46

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1.5x scale

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.