Home / 153,071.20-211,237.08-86,003.20

Finding the Fourth Proportional to 153,071.20, 211,237.08 and 86,003.20

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Solution

The fourth proportional to 153,071.20, 211,237.08 and 86,003.20 is: 118,683.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,071.20 : 211,237.08 = 86,003.20 : x
  2. Step 2: Convert to fraction form
    153,071.20/211,237.08 = 86,003.20/x
  3. Step 3: Cross multiply
    153,071.20x = 211,237.08 × 86,003.20
  4. Step 4: Simplify right side
    153,071.20x = 18,167,064,838.66
  5. Step 5: Solve for x
    x = 18,167,064,838.66/153,071.20
  6. Step 6: Final answer
    x = 118,683.76

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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.