Home / 155,052,543.15-213,977,073.72-85,442,408.03

Finding the Fourth Proportional to 155,052,543.15, 213,977,073.72 and 85,442,408.03

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Solution

The fourth proportional to 155,052,543.15, 213,977,073.72 and 85,442,408.03 is: 117,913,038.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,052,543.15 : 213,977,073.72 = 85,442,408.03 : x
  2. Step 2: Convert to fraction form
    155,052,543.15/213,977,073.72 = 85,442,408.03/x
  3. Step 3: Cross multiply
    155,052,543.15x = 213,977,073.72 × 85,442,408.03
  4. Step 4: Simplify right side
    155,052,543.15x = 18,282,716,440,779,744
  5. Step 5: Solve for x
    x = 18,282,716,440,779,744/155,052,543.15
  6. Step 6: Final answer
    x = 117,913,038.18

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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.