Home / 103,168.28-142,434.34-67,418.12

Finding the Fourth Proportional to 103,168.28, 142,434.34 and 67,418.12

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Solution

The fourth proportional to 103,168.28, 142,434.34 and 67,418.12 is: 93,077.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,168.28 : 142,434.34 = 67,418.12 : x
  2. Step 2: Convert to fraction form
    103,168.28/142,434.34 = 67,418.12/x
  3. Step 3: Cross multiply
    103,168.28x = 142,434.34 × 67,418.12
  4. Step 4: Simplify right side
    103,168.28x = 9,602,655,426.24
  5. Step 5: Solve for x
    x = 9,602,655,426.24/103,168.28
  6. Step 6: Final answer
    x = 93,077.60

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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.