Home / 129,328.04-178,445.94-75,602.66

Finding the Fourth Proportional to 129,328.04, 178,445.94 and 75,602.66

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Solution

The fourth proportional to 129,328.04, 178,445.94 and 75,602.66 is: 104,316.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,328.04 : 178,445.94 = 75,602.66 : x
  2. Step 2: Convert to fraction form
    129,328.04/178,445.94 = 75,602.66/x
  3. Step 3: Cross multiply
    129,328.04x = 178,445.94 × 75,602.66
  4. Step 4: Simplify right side
    129,328.04x = 13,490,987,730.20
  5. Step 5: Solve for x
    x = 13,490,987,730.20/129,328.04
  6. Step 6: Final answer
    x = 104,316.03

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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.