Home / 108,557.28-163,085.40-77,045.58

Finding the Fourth Proportional to 108,557.28, 163,085.40 and 77,045.58

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Solution

The fourth proportional to 108,557.28, 163,085.40 and 77,045.58 is: 115,745.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,557.28 : 163,085.40 = 77,045.58 : x
  2. Step 2: Convert to fraction form
    108,557.28/163,085.40 = 77,045.58/x
  3. Step 3: Cross multiply
    108,557.28x = 163,085.40 × 77,045.58
  4. Step 4: Simplify right side
    108,557.28x = 12,565,009,232.53
  5. Step 5: Solve for x
    x = 12,565,009,232.53/108,557.28
  6. Step 6: Final answer
    x = 115,745.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.