Home / 129,354,465.72-178,508,254.59-70,617,130.83

Finding the Fourth Proportional to 129,354,465.72, 178,508,254.59 and 70,617,130.83

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Solution

The fourth proportional to 129,354,465.72, 178,508,254.59 and 70,617,130.83 is: 97,451,144.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,354,465.72 : 178,508,254.59 = 70,617,130.83 : x
  2. Step 2: Convert to fraction form
    129,354,465.72/178,508,254.59 = 70,617,130.83/x
  3. Step 3: Cross multiply
    129,354,465.72x = 178,508,254.59 × 70,617,130.83
  4. Step 4: Simplify right side
    129,354,465.72x = 12,605,740,768,616,978
  5. Step 5: Solve for x
    x = 12,605,740,768,616,978/129,354,465.72
  6. Step 6: Final answer
    x = 97,451,144.80

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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.