Home / 129,473,458.78-178,673,444.80-69,934,754.61

Finding the Fourth Proportional to 129,473,458.78, 178,673,444.80 and 69,934,754.61

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Solution

The fourth proportional to 129,473,458.78, 178,673,444.80 and 69,934,754.61 is: 96,510,000.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,473,458.78 : 178,673,444.80 = 69,934,754.61 : x
  2. Step 2: Convert to fraction form
    129,473,458.78/178,673,444.80 = 69,934,754.61/x
  3. Step 3: Cross multiply
    129,473,458.78x = 178,673,444.80 × 69,934,754.61
  4. Step 4: Simplify right side
    129,473,458.78x = 12,495,483,517,236,544
  5. Step 5: Solve for x
    x = 12,495,483,517,236,544/129,473,458.78
  6. Step 6: Final answer
    x = 96,510,000.08

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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.