Home / 138,331.28-190,894.56-84,612.35

Finding the Fourth Proportional to 138,331.28, 190,894.56 and 84,612.35

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Solution

The fourth proportional to 138,331.28, 190,894.56 and 84,612.35 is: 116,763.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,331.28 : 190,894.56 = 84,612.35 : x
  2. Step 2: Convert to fraction form
    138,331.28/190,894.56 = 84,612.35/x
  3. Step 3: Cross multiply
    138,331.28x = 190,894.56 × 84,612.35
  4. Step 4: Simplify right side
    138,331.28x = 16,152,036,369.34
  5. Step 5: Solve for x
    x = 16,152,036,369.34/138,331.28
  6. Step 6: Final answer
    x = 116,763.45

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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.