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Finding the Fourth Proportional to 261,971.50, 392,957.26 and 112,114.68

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Solution

The fourth proportional to 261,971.50, 392,957.26 and 112,114.68 is: 168,172.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,971.50 : 392,957.26 = 112,114.68 : x
  2. Step 2: Convert to fraction form
    261,971.50/392,957.26 = 112,114.68/x
  3. Step 3: Cross multiply
    261,971.50x = 392,957.26 × 112,114.68
  4. Step 4: Simplify right side
    261,971.50x = 44,056,275,191.91
  5. Step 5: Solve for x
    x = 44,056,275,191.91/261,971.50
  6. Step 6: Final answer
    x = 168,172.01

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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.