Home / 118,823.19-163,979.81-65,111.61

Finding the Fourth Proportional to 118,823.19, 163,979.81 and 65,111.61

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Solution

The fourth proportional to 118,823.19, 163,979.81 and 65,111.61 is: 89,856.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,823.19 : 163,979.81 = 65,111.61 : x
  2. Step 2: Convert to fraction form
    118,823.19/163,979.81 = 65,111.61/x
  3. Step 3: Cross multiply
    118,823.19x = 163,979.81 × 65,111.61
  4. Step 4: Simplify right side
    118,823.19x = 10,676,989,970.13
  5. Step 5: Solve for x
    x = 10,676,989,970.13/118,823.19
  6. Step 6: Final answer
    x = 89,856.12

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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.