Home / 129,547.79-178,776.30-75,110.51

Finding the Fourth Proportional to 129,547.79, 178,776.30 and 75,110.51

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Solution

The fourth proportional to 129,547.79, 178,776.30 and 75,110.51 is: 103,652.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,547.79 : 178,776.30 = 75,110.51 : x
  2. Step 2: Convert to fraction form
    129,547.79/178,776.30 = 75,110.51/x
  3. Step 3: Cross multiply
    129,547.79x = 178,776.30 × 75,110.51
  4. Step 4: Simplify right side
    129,547.79x = 13,427,978,175.03
  5. Step 5: Solve for x
    x = 13,427,978,175.03/129,547.79
  6. Step 6: Final answer
    x = 103,652.70

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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.