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Finding the Fourth Proportional to 128,975.60, 193,463.40 and 97,482.80

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Solution

The fourth proportional to 128,975.60, 193,463.40 and 97,482.80 is: 146,224.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,975.60 : 193,463.40 = 97,482.80 : x
  2. Step 2: Convert to fraction form
    128,975.60/193,463.40 = 97,482.80/x
  3. Step 3: Cross multiply
    128,975.60x = 193,463.40 × 97,482.80
  4. Step 4: Simplify right side
    128,975.60x = 18,859,353,929.52
  5. Step 5: Solve for x
    x = 18,859,353,929.52/128,975.60
  6. Step 6: Final answer
    x = 146,224.20

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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.