Home / 208,672,159.40-287,956,337.94-115,846,688.53

Finding the Fourth Proportional to 208,672,159.40, 287,956,337.94 and 115,846,688.53

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Solution

The fourth proportional to 208,672,159.40, 287,956,337.94 and 115,846,688.53 is: 159,862,189.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,672,159.40 : 287,956,337.94 = 115,846,688.53 : x
  2. Step 2: Convert to fraction form
    208,672,159.40/287,956,337.94 = 115,846,688.53/x
  3. Step 3: Cross multiply
    208,672,159.40x = 287,956,337.94 × 115,846,688.53
  4. Step 4: Simplify right side
    208,672,159.40x = 33,358,788,192,260,076
  5. Step 5: Solve for x
    x = 33,358,788,192,260,076/208,672,159.40
  6. Step 6: Final answer
    x = 159,862,189.04

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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.