Home / 124,128.51-171,309.95-73,157.65

Finding the Fourth Proportional to 124,128.51, 171,309.95 and 73,157.65

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Solution

The fourth proportional to 124,128.51, 171,309.95 and 73,157.65 is: 100,964.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,128.51 : 171,309.95 = 73,157.65 : x
  2. Step 2: Convert to fraction form
    124,128.51/171,309.95 = 73,157.65/x
  3. Step 3: Cross multiply
    124,128.51x = 171,309.95 × 73,157.65
  4. Step 4: Simplify right side
    124,128.51x = 12,532,632,569.55
  5. Step 5: Solve for x
    x = 12,532,632,569.55/124,128.51
  6. Step 6: Final answer
    x = 100,964.98

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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.