Home / 153,209.32-211,436.90-86,145.64

Finding the Fourth Proportional to 153,209.32, 211,436.90 and 86,145.64

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Solution

The fourth proportional to 153,209.32, 211,436.90 and 86,145.64 is: 118,885.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,209.32 : 211,436.90 = 86,145.64 : x
  2. Step 2: Convert to fraction form
    153,209.32/211,436.90 = 86,145.64/x
  3. Step 3: Cross multiply
    153,209.32x = 211,436.90 × 86,145.64
  4. Step 4: Simplify right side
    153,209.32x = 18,214,367,070.12
  5. Step 5: Solve for x
    x = 18,214,367,070.12/153,209.32
  6. Step 6: Final answer
    x = 118,885.50

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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.