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Finding the Fourth Proportional to 147,455.60, 220,855.35 and 121,211.60

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Solution

The fourth proportional to 147,455.60, 220,855.35 and 121,211.60 is: 181,547.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,455.60 : 220,855.35 = 121,211.60 : x
  2. Step 2: Convert to fraction form
    147,455.60/220,855.35 = 121,211.60/x
  3. Step 3: Cross multiply
    147,455.60x = 220,855.35 × 121,211.60
  4. Step 4: Simplify right side
    147,455.60x = 26,770,230,342.06
  5. Step 5: Solve for x
    x = 26,770,230,342.06/147,455.60
  6. Step 6: Final answer
    x = 181,547.74

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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.