Home / 129,085,315.92-178,132,538.94-70,346,719.86

Finding the Fourth Proportional to 129,085,315.92, 178,132,538.94 and 70,346,719.86

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Solution

The fourth proportional to 129,085,315.92, 178,132,538.94 and 70,346,719.86 is: 97,075,641.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,085,315.92 : 178,132,538.94 = 70,346,719.86 : x
  2. Step 2: Convert to fraction form
    129,085,315.92/178,132,538.94 = 70,346,719.86/x
  3. Step 3: Cross multiply
    129,085,315.92x = 178,132,538.94 × 70,346,719.86
  4. Step 4: Simplify right side
    129,085,315.92x = 12,531,039,814,762,722
  5. Step 5: Solve for x
    x = 12,531,039,814,762,722/129,085,315.92
  6. Step 6: Final answer
    x = 97,075,641.22

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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.