Home / 118,686.29-163,787.36-64,974.77

Finding the Fourth Proportional to 118,686.29, 163,787.36 and 64,974.77

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Solution

The fourth proportional to 118,686.29, 163,787.36 and 64,974.77 is: 89,665.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,686.29 : 163,787.36 = 64,974.77 : x
  2. Step 2: Convert to fraction form
    118,686.29/163,787.36 = 64,974.77/x
  3. Step 3: Cross multiply
    118,686.29x = 163,787.36 × 64,974.77
  4. Step 4: Simplify right side
    118,686.29x = 10,642,044,901.10
  5. Step 5: Solve for x
    x = 10,642,044,901.10/118,686.29
  6. Step 6: Final answer
    x = 89,665.33

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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.