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Finding the Fourth Proportional to 145,266.57, 200,486.59 and 81,616.67

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Solution

The fourth proportional to 145,266.57, 200,486.59 and 81,616.67 is: 112,641.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,266.57 : 200,486.59 = 81,616.67 : x
  2. Step 2: Convert to fraction form
    145,266.57/200,486.59 = 81,616.67/x
  3. Step 3: Cross multiply
    145,266.57x = 200,486.59 × 81,616.67
  4. Step 4: Simplify right side
    145,266.57x = 16,363,047,855.46
  5. Step 5: Solve for x
    x = 16,363,047,855.46/145,266.57
  6. Step 6: Final answer
    x = 112,641.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.