Home / 201,665,081.70-302,318,159.49-78,815,461.86

Finding the Fourth Proportional to 201,665,081.70, 302,318,159.49 and 78,815,461.86

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Solution

The fourth proportional to 201,665,081.70, 302,318,159.49 and 78,815,461.86 is: 118,153,054.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,665,081.70 : 302,318,159.49 = 78,815,461.86 : x
  2. Step 2: Convert to fraction form
    201,665,081.70/302,318,159.49 = 78,815,461.86/x
  3. Step 3: Cross multiply
    201,665,081.70x = 302,318,159.49 × 78,815,461.86
  4. Step 4: Simplify right side
    201,665,081.70x = 23,827,345,368,869,492
  5. Step 5: Solve for x
    x = 23,827,345,368,869,492/201,665,081.70
  6. Step 6: Final answer
    x = 118,153,054.40

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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.