Home / 102,021.40-153,032.10-83,322.55

Finding the Fourth Proportional to 102,021.40, 153,032.10 and 83,322.55

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Solution

The fourth proportional to 102,021.40, 153,032.10 and 83,322.55 is: 124,983.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,021.40 : 153,032.10 = 83,322.55 : x
  2. Step 2: Convert to fraction form
    102,021.40/153,032.10 = 83,322.55/x
  3. Step 3: Cross multiply
    102,021.40x = 153,032.10 × 83,322.55
  4. Step 4: Simplify right side
    102,021.40x = 12,751,024,803.86
  5. Step 5: Solve for x
    x = 12,751,024,803.86/102,021.40
  6. Step 6: Final answer
    x = 124,983.83

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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.