Home / 153,630.08-212,011.20-86,560.64

Finding the Fourth Proportional to 153,630.08, 212,011.20 and 86,560.64

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Solution

The fourth proportional to 153,630.08, 212,011.20 and 86,560.64 is: 119,454.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,630.08 : 212,011.20 = 86,560.64 : x
  2. Step 2: Convert to fraction form
    153,630.08/212,011.20 = 86,560.64/x
  3. Step 3: Cross multiply
    153,630.08x = 212,011.20 × 86,560.64
  4. Step 4: Simplify right side
    153,630.08x = 18,351,825,159.17
  5. Step 5: Solve for x
    x = 18,351,825,159.17/153,630.08
  6. Step 6: Final answer
    x = 119,454.64

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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.