Home / 130,390,368.40-179,899,468.92-78,160,346.92

Finding the Fourth Proportional to 130,390,368.40, 179,899,468.92 and 78,160,346.92

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Solution

The fourth proportional to 130,390,368.40, 179,899,468.92 and 78,160,346.92 is: 107,837,757.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,390,368.40 : 179,899,468.92 = 78,160,346.92 : x
  2. Step 2: Convert to fraction form
    130,390,368.40/179,899,468.92 = 78,160,346.92/x
  3. Step 3: Cross multiply
    130,390,368.40x = 179,899,468.92 × 78,160,346.92
  4. Step 4: Simplify right side
    130,390,368.40x = 14,061,004,901,510,958
  5. Step 5: Solve for x
    x = 14,061,004,901,510,958/130,390,368.40
  6. Step 6: Final answer
    x = 107,837,757.30

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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.