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Finding the Fourth Proportional to 161,875.80, 242,813.70 and 83,143.80

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Solution

The fourth proportional to 161,875.80, 242,813.70 and 83,143.80 is: 124,715.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,875.80 : 242,813.70 = 83,143.80 : x
  2. Step 2: Convert to fraction form
    161,875.80/242,813.70 = 83,143.80/x
  3. Step 3: Cross multiply
    161,875.80x = 242,813.70 × 83,143.80
  4. Step 4: Simplify right side
    161,875.80x = 20,188,453,710.06
  5. Step 5: Solve for x
    x = 20,188,453,710.06/161,875.80
  6. Step 6: Final answer
    x = 124,715.70

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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.