Home / 124,659,039.60-186,988,559.40-78,742,537.20

Finding the Fourth Proportional to 124,659,039.60, 186,988,559.40 and 78,742,537.20

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Solution

The fourth proportional to 124,659,039.60, 186,988,559.40 and 78,742,537.20 is: 118,113,805.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,659,039.60 : 186,988,559.40 = 78,742,537.20 : x
  2. Step 2: Convert to fraction form
    124,659,039.60/186,988,559.40 = 78,742,537.20/x
  3. Step 3: Cross multiply
    124,659,039.60x = 186,988,559.40 × 78,742,537.20
  4. Step 4: Simplify right side
    124,659,039.60x = 14,723,953,594,528,910
  5. Step 5: Solve for x
    x = 14,723,953,594,528,910/124,659,039.60
  6. Step 6: Final answer
    x = 118,113,805.80

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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.