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Finding the Fourth Proportional to 107,274.40, 148,045.12 and 61,960.64

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Solution

The fourth proportional to 107,274.40, 148,045.12 and 61,960.64 is: 85,509.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,274.40 : 148,045.12 = 61,960.64 : x
  2. Step 2: Convert to fraction form
    107,274.40/148,045.12 = 61,960.64/x
  3. Step 3: Cross multiply
    107,274.40x = 148,045.12 × 61,960.64
  4. Step 4: Simplify right side
    107,274.40x = 9,172,970,384.08
  5. Step 5: Solve for x
    x = 9,172,970,384.08/107,274.40
  6. Step 6: Final answer
    x = 85,509.41

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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.