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Finding the Fourth Proportional to 153,887.80, 230,831.70 and 120,710.20

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Solution

The fourth proportional to 153,887.80, 230,831.70 and 120,710.20 is: 181,065.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,887.80 : 230,831.70 = 120,710.20 : x
  2. Step 2: Convert to fraction form
    153,887.80/230,831.70 = 120,710.20/x
  3. Step 3: Cross multiply
    153,887.80x = 230,831.70 × 120,710.20
  4. Step 4: Simplify right side
    153,887.80x = 27,863,740,673.34
  5. Step 5: Solve for x
    x = 27,863,740,673.34/153,887.80
  6. Step 6: Final answer
    x = 181,065.30

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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.