Home / 147,688.60-221,532.90-76,829.80

Finding the Fourth Proportional to 147,688.60, 221,532.90 and 76,829.80

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Solution

The fourth proportional to 147,688.60, 221,532.90 and 76,829.80 is: 115,244.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,688.60 : 221,532.90 = 76,829.80 : x
  2. Step 2: Convert to fraction form
    147,688.60/221,532.90 = 76,829.80/x
  3. Step 3: Cross multiply
    147,688.60x = 221,532.90 × 76,829.80
  4. Step 4: Simplify right side
    147,688.60x = 17,020,328,400.42
  5. Step 5: Solve for x
    x = 17,020,328,400.42/147,688.60
  6. Step 6: Final answer
    x = 115,244.70

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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.