Home / 103,353,457.20-155,030,185.80-72,742,455.60

Finding the Fourth Proportional to 103,353,457.20, 155,030,185.80 and 72,742,455.60

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Solution

The fourth proportional to 103,353,457.20, 155,030,185.80 and 72,742,455.60 is: 109,113,683.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,353,457.20 : 155,030,185.80 = 72,742,455.60 : x
  2. Step 2: Convert to fraction form
    103,353,457.20/155,030,185.80 = 72,742,455.60/x
  3. Step 3: Cross multiply
    103,353,457.20x = 155,030,185.80 × 72,742,455.60
  4. Step 4: Simplify right side
    103,353,457.20x = 11,277,276,407,216,250
  5. Step 5: Solve for x
    x = 11,277,276,407,216,250/103,353,457.20
  6. Step 6: Final answer
    x = 109,113,683.40

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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.