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Finding the Fourth Proportional to 135,192.71, 202,818.15 and 40,430.40

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Solution

The fourth proportional to 135,192.71, 202,818.15 and 40,430.40 is: 60,654.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,192.71 : 202,818.15 = 40,430.40 : x
  2. Step 2: Convert to fraction form
    135,192.71/202,818.15 = 40,430.40/x
  3. Step 3: Cross multiply
    135,192.71x = 202,818.15 × 40,430.40
  4. Step 4: Simplify right side
    135,192.71x = 8,200,018,931.76
  5. Step 5: Solve for x
    x = 8,200,018,931.76/135,192.71
  6. Step 6: Final answer
    x = 60,654.30

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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.