Home / 137,432.95-189,659.60-83,720.23

Finding the Fourth Proportional to 137,432.95, 189,659.60 and 83,720.23

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Solution

The fourth proportional to 137,432.95, 189,659.60 and 83,720.23 is: 115,535.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,432.95 : 189,659.60 = 83,720.23 : x
  2. Step 2: Convert to fraction form
    137,432.95/189,659.60 = 83,720.23/x
  3. Step 3: Cross multiply
    137,432.95x = 189,659.60 × 83,720.23
  4. Step 4: Simplify right side
    137,432.95x = 15,878,345,333.71
  5. Step 5: Solve for x
    x = 15,878,345,333.71/137,432.95
  6. Step 6: Final answer
    x = 115,535.21

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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.