Home / 153,079.40-211,321.32-102,178.10

Finding the Fourth Proportional to 153,079.40, 211,321.32 and 102,178.10

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Solution

The fourth proportional to 153,079.40, 211,321.32 and 102,178.10 is: 141,053.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,079.40 : 211,321.32 = 102,178.10 : x
  2. Step 2: Convert to fraction form
    153,079.40/211,321.32 = 102,178.10/x
  3. Step 3: Cross multiply
    153,079.40x = 211,321.32 × 102,178.10
  4. Step 4: Simplify right side
    153,079.40x = 21,592,410,967.09
  5. Step 5: Solve for x
    x = 21,592,410,967.09/153,079.40
  6. Step 6: Final answer
    x = 141,053.67

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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.