Home / 121,237.60-181,813.20-42,354.40

Finding the Fourth Proportional to 121,237.60, 181,813.20 and 42,354.40

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Solution

The fourth proportional to 121,237.60, 181,813.20 and 42,354.40 is: 63,516.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,237.60 : 181,813.20 = 42,354.40 : x
  2. Step 2: Convert to fraction form
    121,237.60/181,813.20 = 42,354.40/x
  3. Step 3: Cross multiply
    121,237.60x = 181,813.20 × 42,354.40
  4. Step 4: Simplify right side
    121,237.60x = 7,700,588,998.08
  5. Step 5: Solve for x
    x = 7,700,588,998.08/121,237.60
  6. Step 6: Final answer
    x = 63,516.51

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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.