Home / 91,545.35-136,938.87-85,946.63

Finding the Fourth Proportional to 91,545.35, 136,938.87 and 85,946.63

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Solution

The fourth proportional to 91,545.35, 136,938.87 and 85,946.63 is: 128,563.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,545.35 : 136,938.87 = 85,946.63 : x
  2. Step 2: Convert to fraction form
    91,545.35/136,938.87 = 85,946.63/x
  3. Step 3: Cross multiply
    91,545.35x = 136,938.87 × 85,946.63
  4. Step 4: Simplify right side
    91,545.35x = 11,769,433,707.81
  5. Step 5: Solve for x
    x = 11,769,433,707.81/91,545.35
  6. Step 6: Final answer
    x = 128,563.98

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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.