Home / 121,023-181,535.40-42,137.10

Finding the Fourth Proportional to 121,023, 181,535.40 and 42,137.10

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Solution

The fourth proportional to 121,023, 181,535.40 and 42,137.10 is: 63,205.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,023 : 181,535.40 = 42,137.10 : x
  2. Step 2: Convert to fraction form
    121,023/181,535.40 = 42,137.10/x
  3. Step 3: Cross multiply
    121,023x = 181,535.40 × 42,137.10
  4. Step 4: Simplify right side
    121,023x = 7,649,375,303.34
  5. Step 5: Solve for x
    x = 7,649,375,303.34/121,023
  6. Step 6: Final answer
    x = 63,205.96

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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.