Home / 161,827.20-242,740.80-86,918.40

Finding the Fourth Proportional to 161,827.20, 242,740.80 and 86,918.40

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Solution

The fourth proportional to 161,827.20, 242,740.80 and 86,918.40 is: 130,377.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,827.20 : 242,740.80 = 86,918.40 : x
  2. Step 2: Convert to fraction form
    161,827.20/242,740.80 = 86,918.40/x
  3. Step 3: Cross multiply
    161,827.20x = 242,740.80 × 86,918.40
  4. Step 4: Simplify right side
    161,827.20x = 21,098,641,950.72
  5. Step 5: Solve for x
    x = 21,098,641,950.72/161,827.20
  6. Step 6: Final answer
    x = 130,377.60

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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.