Home / 112,346,972.70-168,520,459.05-78,306,755.10

Finding the Fourth Proportional to 112,346,972.70, 168,520,459.05 and 78,306,755.10

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Solution

The fourth proportional to 112,346,972.70, 168,520,459.05 and 78,306,755.10 is: 117,460,132.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,346,972.70 : 168,520,459.05 = 78,306,755.10 : x
  2. Step 2: Convert to fraction form
    112,346,972.70/168,520,459.05 = 78,306,755.10/x
  3. Step 3: Cross multiply
    112,346,972.70x = 168,520,459.05 × 78,306,755.10
  4. Step 4: Simplify right side
    112,346,972.70x = 13,196,290,316,167,928
  5. Step 5: Solve for x
    x = 13,196,290,316,167,928/112,346,972.70
  6. Step 6: Final answer
    x = 117,460,132.65

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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.