Home / 121,041.60-181,519.20-42,158.40

Finding the Fourth Proportional to 121,041.60, 181,519.20 and 42,158.40

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Solution

The fourth proportional to 121,041.60, 181,519.20 and 42,158.40 is: 63,222.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,041.60 : 181,519.20 = 42,158.40 : x
  2. Step 2: Convert to fraction form
    121,041.60/181,519.20 = 42,158.40/x
  3. Step 3: Cross multiply
    121,041.60x = 181,519.20 × 42,158.40
  4. Step 4: Simplify right side
    121,041.60x = 7,652,559,041.28
  5. Step 5: Solve for x
    x = 7,652,559,041.28/121,041.60
  6. Step 6: Final answer
    x = 63,222.55

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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.