Home / 103,138,345.60-142,330,989.60-56,732,129.92

Finding the Fourth Proportional to 103,138,345.60, 142,330,989.60 and 56,732,129.92

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Solution

The fourth proportional to 103,138,345.60, 142,330,989.60 and 56,732,129.92 is: 78,290,379.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,138,345.60 : 142,330,989.60 = 56,732,129.92 : x
  2. Step 2: Convert to fraction form
    103,138,345.60/142,330,989.60 = 56,732,129.92/x
  3. Step 3: Cross multiply
    103,138,345.60x = 142,330,989.60 × 56,732,129.92
  4. Step 4: Simplify right side
    103,138,345.60x = 8,074,740,193,629,369
  5. Step 5: Solve for x
    x = 8,074,740,193,629,369/103,138,345.60
  6. Step 6: Final answer
    x = 78,290,379.26

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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.