Home / 147,631.60-221,447.40-81,276.40

Finding the Fourth Proportional to 147,631.60, 221,447.40 and 81,276.40

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Solution

The fourth proportional to 147,631.60, 221,447.40 and 81,276.40 is: 121,914.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,631.60 : 221,447.40 = 81,276.40 : x
  2. Step 2: Convert to fraction form
    147,631.60/221,447.40 = 81,276.40/x
  3. Step 3: Cross multiply
    147,631.60x = 221,447.40 × 81,276.40
  4. Step 4: Simplify right side
    147,631.60x = 17,998,447,461.36
  5. Step 5: Solve for x
    x = 17,998,447,461.36/147,631.60
  6. Step 6: Final answer
    x = 121,914.60

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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.