Home / 161,705,710.90-242,569,063.95-85,178,206.90

Finding the Fourth Proportional to 161,705,710.90, 242,569,063.95 and 85,178,206.90

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Solution

The fourth proportional to 161,705,710.90, 242,569,063.95 and 85,178,206.90 is: 127,772,839.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,705,710.90 : 242,569,063.95 = 85,178,206.90 : x
  2. Step 2: Convert to fraction form
    161,705,710.90/242,569,063.95 = 85,178,206.90/x
  3. Step 3: Cross multiply
    161,705,710.90x = 242,569,063.95 × 85,178,206.90
  4. Step 4: Simplify right side
    161,705,710.90x = 20,661,597,916,672,432
  5. Step 5: Solve for x
    x = 20,661,597,916,672,432/161,705,710.90
  6. Step 6: Final answer
    x = 127,772,839.94

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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.