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Finding the Fourth Proportional to 153,009.44, 229,373.42 and 81,980.95

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Solution

The fourth proportional to 153,009.44, 229,373.42 and 81,980.95 is: 122,896.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,009.44 : 229,373.42 = 81,980.95 : x
  2. Step 2: Convert to fraction form
    153,009.44/229,373.42 = 81,980.95/x
  3. Step 3: Cross multiply
    153,009.44x = 229,373.42 × 81,980.95
  4. Step 4: Simplify right side
    153,009.44x = 18,804,249,729.48
  5. Step 5: Solve for x
    x = 18,804,249,729.48/153,009.44
  6. Step 6: Final answer
    x = 122,896.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.