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Finding the Fourth Proportional to 124,565.76, 171,904.40 and 67,980.76

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Solution

The fourth proportional to 124,565.76, 171,904.40 and 67,980.76 is: 93,815.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,565.76 : 171,904.40 = 67,980.76 : x
  2. Step 2: Convert to fraction form
    124,565.76/171,904.40 = 67,980.76/x
  3. Step 3: Cross multiply
    124,565.76x = 171,904.40 × 67,980.76
  4. Step 4: Simplify right side
    124,565.76x = 11,686,191,759.34
  5. Step 5: Solve for x
    x = 11,686,191,759.34/124,565.76
  6. Step 6: Final answer
    x = 93,815.44

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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.