Home / 121,608.76-182,431.42-42,709.08

Finding the Fourth Proportional to 121,608.76, 182,431.42 and 42,709.08

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Solution

The fourth proportional to 121,608.76, 182,431.42 and 42,709.08 is: 64,070.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,608.76 : 182,431.42 = 42,709.08 : x
  2. Step 2: Convert to fraction form
    121,608.76/182,431.42 = 42,709.08/x
  3. Step 3: Cross multiply
    121,608.76x = 182,431.42 × 42,709.08
  4. Step 4: Simplify right side
    121,608.76x = 7,791,478,111.29
  5. Step 5: Solve for x
    x = 7,791,478,111.29/121,608.76
  6. Step 6: Final answer
    x = 64,070.04

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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.