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Finding the Fourth Proportional to 95,685, 142,516.74 and 90,688.92

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Solution

The fourth proportional to 95,685, 142,516.74 and 90,688.92 is: 135,075.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,685 : 142,516.74 = 90,688.92 : x
  2. Step 2: Convert to fraction form
    95,685/142,516.74 = 90,688.92/x
  3. Step 3: Cross multiply
    95,685x = 142,516.74 × 90,688.92
  4. Step 4: Simplify right side
    95,685x = 12,924,689,232.52
  5. Step 5: Solve for x
    x = 12,924,689,232.52/95,685
  6. Step 6: Final answer
    x = 135,075.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.