Home / 139,014,799.76-191,840,424.10-77,145,094.64

Finding the Fourth Proportional to 139,014,799.76, 191,840,424.10 and 77,145,094.64

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Solution

The fourth proportional to 139,014,799.76, 191,840,424.10 and 77,145,094.64 is: 106,460,230.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,014,799.76 : 191,840,424.10 = 77,145,094.64 : x
  2. Step 2: Convert to fraction form
    139,014,799.76/191,840,424.10 = 77,145,094.64/x
  3. Step 3: Cross multiply
    139,014,799.76x = 191,840,424.10 × 77,145,094.64
  4. Step 4: Simplify right side
    139,014,799.76x = 14,799,547,673,258,974
  5. Step 5: Solve for x
    x = 14,799,547,673,258,974/139,014,799.76
  6. Step 6: Final answer
    x = 106,460,230.84

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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.