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Finding the Fourth Proportional to 101,815.39, 140,503.09 and 56,492.40

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Solution

The fourth proportional to 101,815.39, 140,503.09 and 56,492.40 is: 77,958.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,815.39 : 140,503.09 = 56,492.40 : x
  2. Step 2: Convert to fraction form
    101,815.39/140,503.09 = 56,492.40/x
  3. Step 3: Cross multiply
    101,815.39x = 140,503.09 × 56,492.40
  4. Step 4: Simplify right side
    101,815.39x = 7,937,356,761.52
  5. Step 5: Solve for x
    x = 7,937,356,761.52/101,815.39
  6. Step 6: Final answer
    x = 77,958.32

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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.