Home / 129,291,208.52-178,425,660.30-70,557,666.32

Finding the Fourth Proportional to 129,291,208.52, 178,425,660.30 and 70,557,666.32

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Solution

The fourth proportional to 129,291,208.52, 178,425,660.30 and 70,557,666.32 is: 97,371,649.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,291,208.52 : 178,425,660.30 = 70,557,666.32 : x
  2. Step 2: Convert to fraction form
    129,291,208.52/178,425,660.30 = 70,557,666.32/x
  3. Step 3: Cross multiply
    129,291,208.52x = 178,425,660.30 × 70,557,666.32
  4. Step 4: Simplify right side
    129,291,208.52x = 12,589,298,202,373,070
  5. Step 5: Solve for x
    x = 12,589,298,202,373,070/129,291,208.52
  6. Step 6: Final answer
    x = 97,371,649.21

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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.