Home / 128,298,989.19-192,467,688.87-46,437,020.70

Finding the Fourth Proportional to 128,298,989.19, 192,467,688.87 and 46,437,020.70

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Solution

The fourth proportional to 128,298,989.19, 192,467,688.87 and 46,437,020.70 is: 69,662,482.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,298,989.19 : 192,467,688.87 = 46,437,020.70 : x
  2. Step 2: Convert to fraction form
    128,298,989.19/192,467,688.87 = 46,437,020.70/x
  3. Step 3: Cross multiply
    128,298,989.19x = 192,467,688.87 × 46,437,020.70
  4. Step 4: Simplify right side
    128,298,989.19x = 8,937,626,052,697,441
  5. Step 5: Solve for x
    x = 8,937,626,052,697,441/128,298,989.19
  6. Step 6: Final answer
    x = 69,662,482.21

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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.