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Finding the Fourth Proportional to 113,320.40, 169,980.60 and 39,448.40

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Solution

The fourth proportional to 113,320.40, 169,980.60 and 39,448.40 is: 59,172.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,320.40 : 169,980.60 = 39,448.40 : x
  2. Step 2: Convert to fraction form
    113,320.40/169,980.60 = 39,448.40/x
  3. Step 3: Cross multiply
    113,320.40x = 169,980.60 × 39,448.40
  4. Step 4: Simplify right side
    113,320.40x = 6,705,462,701.04
  5. Step 5: Solve for x
    x = 6,705,462,701.04/113,320.40
  6. Step 6: Final answer
    x = 59,172.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.