Home / 121,973.40-182,960.10-90,869.40

Finding the Fourth Proportional to 121,973.40, 182,960.10 and 90,869.40

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Solution

The fourth proportional to 121,973.40, 182,960.10 and 90,869.40 is: 136,304.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,973.40 : 182,960.10 = 90,869.40 : x
  2. Step 2: Convert to fraction form
    121,973.40/182,960.10 = 90,869.40/x
  3. Step 3: Cross multiply
    121,973.40x = 182,960.10 × 90,869.40
  4. Step 4: Simplify right side
    121,973.40x = 16,625,474,510.94
  5. Step 5: Solve for x
    x = 16,625,474,510.94/121,973.40
  6. Step 6: Final answer
    x = 136,304.10

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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.