Home / 147,990.40-221,985.60-42,812.80

Finding the Fourth Proportional to 147,990.40, 221,985.60 and 42,812.80

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Solution

The fourth proportional to 147,990.40, 221,985.60 and 42,812.80 is: 64,219.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,990.40 : 221,985.60 = 42,812.80 : x
  2. Step 2: Convert to fraction form
    147,990.40/221,985.60 = 42,812.80/x
  3. Step 3: Cross multiply
    147,990.40x = 221,985.60 × 42,812.80
  4. Step 4: Simplify right side
    147,990.40x = 9,503,825,095.68
  5. Step 5: Solve for x
    x = 9,503,825,095.68/147,990.40
  6. Step 6: Final answer
    x = 64,219.20

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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.