Home / 121,005.60-181,465.20-42,122.40

Finding the Fourth Proportional to 121,005.60, 181,465.20 and 42,122.40

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Solution

The fourth proportional to 121,005.60, 181,465.20 and 42,122.40 is: 63,168.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,005.60 : 181,465.20 = 42,122.40 : x
  2. Step 2: Convert to fraction form
    121,005.60/181,465.20 = 42,122.40/x
  3. Step 3: Cross multiply
    121,005.60x = 181,465.20 × 42,122.40
  4. Step 4: Simplify right side
    121,005.60x = 7,643,749,740.48
  5. Step 5: Solve for x
    x = 7,643,749,740.48/121,005.60
  6. Step 6: Final answer
    x = 63,168.56

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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.