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Finding the Fourth Proportional to 146,712.40, 220,068.60 and 57,920.20

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Solution

The fourth proportional to 146,712.40, 220,068.60 and 57,920.20 is: 86,880.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,712.40 : 220,068.60 = 57,920.20 : x
  2. Step 2: Convert to fraction form
    146,712.40/220,068.60 = 57,920.20/x
  3. Step 3: Cross multiply
    146,712.40x = 220,068.60 × 57,920.20
  4. Step 4: Simplify right side
    146,712.40x = 12,746,417,325.72
  5. Step 5: Solve for x
    x = 12,746,417,325.72/146,712.40
  6. Step 6: Final answer
    x = 86,880.30

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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.