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Finding the Fourth Proportional to 139,028,564.80, 208,617,496.80 and 58,257,697.60

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Solution

The fourth proportional to 139,028,564.80, 208,617,496.80 and 58,257,697.60 is: 87,417,827.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,028,564.80 : 208,617,496.80 = 58,257,697.60 : x
  2. Step 2: Convert to fraction form
    139,028,564.80/208,617,496.80 = 58,257,697.60/x
  3. Step 3: Cross multiply
    139,028,564.80x = 208,617,496.80 × 58,257,697.60
  4. Step 4: Simplify right side
    139,028,564.80x = 12,153,575,042,643,368
  5. Step 5: Solve for x
    x = 12,153,575,042,643,368/139,028,564.80
  6. Step 6: Final answer
    x = 87,417,827.12

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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.