Home / 130,208.15-179,762.53-86,634.90

Finding the Fourth Proportional to 130,208.15, 179,762.53 and 86,634.90

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Solution

The fourth proportional to 130,208.15, 179,762.53 and 86,634.90 is: 119,606.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,208.15 : 179,762.53 = 86,634.90 : x
  2. Step 2: Convert to fraction form
    130,208.15/179,762.53 = 86,634.90/x
  3. Step 3: Cross multiply
    130,208.15x = 179,762.53 × 86,634.90
  4. Step 4: Simplify right side
    130,208.15x = 15,573,708,810.30
  5. Step 5: Solve for x
    x = 15,573,708,810.30/130,208.15
  6. Step 6: Final answer
    x = 119,606.25

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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.