Home / 123,619,430.40-185,429,145.60-77,933,875.20

Finding the Fourth Proportional to 123,619,430.40, 185,429,145.60 and 77,933,875.20

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Solution

The fourth proportional to 123,619,430.40, 185,429,145.60 and 77,933,875.20 is: 116,900,812.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,619,430.40 : 185,429,145.60 = 77,933,875.20 : x
  2. Step 2: Convert to fraction form
    123,619,430.40/185,429,145.60 = 77,933,875.20/x
  3. Step 3: Cross multiply
    123,619,430.40x = 185,429,145.60 × 77,933,875.20
  4. Step 4: Simplify right side
    123,619,430.40x = 14,451,211,891,633,030
  5. Step 5: Solve for x
    x = 14,451,211,891,633,030/123,619,430.40
  6. Step 6: Final answer
    x = 116,900,812.80

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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.