Home / 103,168.48-142,434.60-67,418.32

Finding the Fourth Proportional to 103,168.48, 142,434.60 and 67,418.32

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Solution

The fourth proportional to 103,168.48, 142,434.60 and 67,418.32 is: 93,077.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,168.48 : 142,434.60 = 67,418.32 : x
  2. Step 2: Convert to fraction form
    103,168.48/142,434.60 = 67,418.32/x
  3. Step 3: Cross multiply
    103,168.48x = 142,434.60 × 67,418.32
  4. Step 4: Simplify right side
    103,168.48x = 9,602,701,441.87
  5. Step 5: Solve for x
    x = 9,602,701,441.87/103,168.48
  6. Step 6: Final answer
    x = 93,077.86

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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.