Home / 121,589.04-182,401.80-42,689.40

Finding the Fourth Proportional to 121,589.04, 182,401.80 and 42,689.40

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Solution

The fourth proportional to 121,589.04, 182,401.80 and 42,689.40 is: 64,040.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,589.04 : 182,401.80 = 42,689.40 : x
  2. Step 2: Convert to fraction form
    121,589.04/182,401.80 = 42,689.40/x
  3. Step 3: Cross multiply
    121,589.04x = 182,401.80 × 42,689.40
  4. Step 4: Simplify right side
    121,589.04x = 7,786,623,400.92
  5. Step 5: Solve for x
    x = 7,786,623,400.92/121,589.04
  6. Step 6: Final answer
    x = 64,040.50

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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.