Home / 121,790.28-182,700-42,888.18

Finding the Fourth Proportional to 121,790.28, 182,700 and 42,888.18

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Solution

The fourth proportional to 121,790.28, 182,700 and 42,888.18 is: 64,337.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,790.28 : 182,700 = 42,888.18 : x
  2. Step 2: Convert to fraction form
    121,790.28/182,700 = 42,888.18/x
  3. Step 3: Cross multiply
    121,790.28x = 182,700 × 42,888.18
  4. Step 4: Simplify right side
    121,790.28x = 7,835,670,486
  5. Step 5: Solve for x
    x = 7,835,670,486/121,790.28
  6. Step 6: Final answer
    x = 64,337.40

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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.