Home / 145,002,531.34-200,120,532.40-81,433,317.68

Finding the Fourth Proportional to 145,002,531.34, 200,120,532.40 and 81,433,317.68

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Solution

The fourth proportional to 145,002,531.34, 200,120,532.40 and 81,433,317.68 is: 112,387,547.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,002,531.34 : 200,120,532.40 = 81,433,317.68 : x
  2. Step 2: Convert to fraction form
    145,002,531.34/200,120,532.40 = 81,433,317.68/x
  3. Step 3: Cross multiply
    145,002,531.34x = 200,120,532.40 × 81,433,317.68
  4. Step 4: Simplify right side
    145,002,531.34x = 16,296,478,889,219,934
  5. Step 5: Solve for x
    x = 16,296,478,889,219,934/145,002,531.34
  6. Step 6: Final answer
    x = 112,387,547.57

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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.