Home / 153,782.12-212,218.98-86,713.64

Finding the Fourth Proportional to 153,782.12, 212,218.98 and 86,713.64

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Solution

The fourth proportional to 153,782.12, 212,218.98 and 86,713.64 is: 119,664.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,782.12 : 212,218.98 = 86,713.64 : x
  2. Step 2: Convert to fraction form
    153,782.12/212,218.98 = 86,713.64/x
  3. Step 3: Cross multiply
    153,782.12x = 212,218.98 × 86,713.64
  4. Step 4: Simplify right side
    153,782.12x = 18,402,280,232.89
  5. Step 5: Solve for x
    x = 18,402,280,232.89/153,782.12
  6. Step 6: Final answer
    x = 119,664.63

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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.