Home / 103,353,459.70-155,030,189.55-72,742,458.10

Finding the Fourth Proportional to 103,353,459.70, 155,030,189.55 and 72,742,458.10

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Solution

The fourth proportional to 103,353,459.70, 155,030,189.55 and 72,742,458.10 is: 109,113,687.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,353,459.70 : 155,030,189.55 = 72,742,458.10 : x
  2. Step 2: Convert to fraction form
    103,353,459.70/155,030,189.55 = 72,742,458.10/x
  3. Step 3: Cross multiply
    103,353,459.70x = 155,030,189.55 × 72,742,458.10
  4. Step 4: Simplify right side
    103,353,459.70x = 11,277,277,067,575,932
  5. Step 5: Solve for x
    x = 11,277,277,067,575,932/103,353,459.70
  6. Step 6: Final answer
    x = 109,113,687.15

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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.