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Finding the Fourth Proportional to 113,007.12, 155,980.08 and 70,540.08

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Solution

The fourth proportional to 113,007.12, 155,980.08 and 70,540.08 is: 97,364.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,007.12 : 155,980.08 = 70,540.08 : x
  2. Step 2: Convert to fraction form
    113,007.12/155,980.08 = 70,540.08/x
  3. Step 3: Cross multiply
    113,007.12x = 155,980.08 × 70,540.08
  4. Step 4: Simplify right side
    113,007.12x = 11,002,847,321.61
  5. Step 5: Solve for x
    x = 11,002,847,321.61/113,007.12
  6. Step 6: Final answer
    x = 97,364.20

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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.