Home / 123,423.95-170,316.14-72,438.71

Finding the Fourth Proportional to 123,423.95, 170,316.14 and 72,438.71

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Solution

The fourth proportional to 123,423.95, 170,316.14 and 72,438.71 is: 99,960.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,423.95 : 170,316.14 = 72,438.71 : x
  2. Step 2: Convert to fraction form
    123,423.95/170,316.14 = 72,438.71/x
  3. Step 3: Cross multiply
    123,423.95x = 170,316.14 × 72,438.71
  4. Step 4: Simplify right side
    123,423.95x = 12,337,480,260.01
  5. Step 5: Solve for x
    x = 12,337,480,260.01/123,423.95
  6. Step 6: Final answer
    x = 99,960.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.