Home / 129,476.93-178,675.40-72,116.07

Finding the Fourth Proportional to 129,476.93, 178,675.40 and 72,116.07

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Solution

The fourth proportional to 129,476.93, 178,675.40 and 72,116.07 is: 99,518.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,476.93 : 178,675.40 = 72,116.07 : x
  2. Step 2: Convert to fraction form
    129,476.93/178,675.40 = 72,116.07/x
  3. Step 3: Cross multiply
    129,476.93x = 178,675.40 × 72,116.07
  4. Step 4: Simplify right side
    129,476.93x = 12,885,366,760.30
  5. Step 5: Solve for x
    x = 12,885,366,760.30/129,476.93
  6. Step 6: Final answer
    x = 99,518.63

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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.