Home / 112,487,748.22-168,730,419.48-85,360,637.62

Finding the Fourth Proportional to 112,487,748.22, 168,730,419.48 and 85,360,637.62

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Solution

The fourth proportional to 112,487,748.22, 168,730,419.48 and 85,360,637.62 is: 128,040,043.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,487,748.22 : 168,730,419.48 = 85,360,637.62 : x
  2. Step 2: Convert to fraction form
    112,487,748.22/168,730,419.48 = 85,360,637.62/x
  3. Step 3: Cross multiply
    112,487,748.22x = 168,730,419.48 × 85,360,637.62
  4. Step 4: Simplify right side
    112,487,748.22x = 14,402,936,192,702,868
  5. Step 5: Solve for x
    x = 14,402,936,192,702,868/112,487,748.22
  6. Step 6: Final answer
    x = 128,040,043.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.