Home / 153,308.40-211,565.28-86,240.40

Finding the Fourth Proportional to 153,308.40, 211,565.28 and 86,240.40

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Solution

The fourth proportional to 153,308.40, 211,565.28 and 86,240.40 is: 119,011.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,308.40 : 211,565.28 = 86,240.40 : x
  2. Step 2: Convert to fraction form
    153,308.40/211,565.28 = 86,240.40/x
  3. Step 3: Cross multiply
    153,308.40x = 211,565.28 × 86,240.40
  4. Step 4: Simplify right side
    153,308.40x = 18,245,474,373.31
  5. Step 5: Solve for x
    x = 18,245,474,373.31/153,308.40
  6. Step 6: Final answer
    x = 119,011.58

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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.