Home / 123,970.16-171,077.80-67,381.36

Finding the Fourth Proportional to 123,970.16, 171,077.80 and 67,381.36

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Solution

The fourth proportional to 123,970.16, 171,077.80 and 67,381.36 is: 92,985.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,970.16 : 171,077.80 = 67,381.36 : x
  2. Step 2: Convert to fraction form
    123,970.16/171,077.80 = 67,381.36/x
  3. Step 3: Cross multiply
    123,970.16x = 171,077.80 × 67,381.36
  4. Step 4: Simplify right side
    123,970.16x = 11,527,454,829.81
  5. Step 5: Solve for x
    x = 11,527,454,829.81/123,970.16
  6. Step 6: Final answer
    x = 92,985.72

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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.