Home / 153,353.25-211,640.45-86,298.21

Finding the Fourth Proportional to 153,353.25, 211,640.45 and 86,298.21

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Solution

The fourth proportional to 153,353.25, 211,640.45 and 86,298.21 is: 119,098.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,353.25 : 211,640.45 = 86,298.21 : x
  2. Step 2: Convert to fraction form
    153,353.25/211,640.45 = 86,298.21/x
  3. Step 3: Cross multiply
    153,353.25x = 211,640.45 × 86,298.21
  4. Step 4: Simplify right side
    153,353.25x = 18,264,191,567.10
  5. Step 5: Solve for x
    x = 18,264,191,567.10/153,353.25
  6. Step 6: Final answer
    x = 119,098.82

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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.