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Finding the Fourth Proportional to 342,078.02, 513,117.01 and 105,420.70

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Solution

The fourth proportional to 342,078.02, 513,117.01 and 105,420.70 is: 158,131.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,078.02 : 513,117.01 = 105,420.70 : x
  2. Step 2: Convert to fraction form
    342,078.02/513,117.01 = 105,420.70/x
  3. Step 3: Cross multiply
    342,078.02x = 513,117.01 × 105,420.70
  4. Step 4: Simplify right side
    342,078.02x = 54,093,154,376.11
  5. Step 5: Solve for x
    x = 54,093,154,376.11/342,078.02
  6. Step 6: Final answer
    x = 158,131.04

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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.