Home / 139,101,925.20-208,652,887.80-87,369,752.40

Finding the Fourth Proportional to 139,101,925.20, 208,652,887.80 and 87,369,752.40

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Solution

The fourth proportional to 139,101,925.20, 208,652,887.80 and 87,369,752.40 is: 131,054,628.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,101,925.20 : 208,652,887.80 = 87,369,752.40 : x
  2. Step 2: Convert to fraction form
    139,101,925.20/208,652,887.80 = 87,369,752.40/x
  3. Step 3: Cross multiply
    139,101,925.20x = 208,652,887.80 × 87,369,752.40
  4. Step 4: Simplify right side
    139,101,925.20x = 18,229,951,144,630,984
  5. Step 5: Solve for x
    x = 18,229,951,144,630,984/139,101,925.20
  6. Step 6: Final answer
    x = 131,054,628.60

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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.