Home / 85,537,217.60-128,305,826.40-71,365,457.60

Finding the Fourth Proportional to 85,537,217.60, 128,305,826.40 and 71,365,457.60

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Solution

The fourth proportional to 85,537,217.60, 128,305,826.40 and 71,365,457.60 is: 107,048,186.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,537,217.60 : 128,305,826.40 = 71,365,457.60 : x
  2. Step 2: Convert to fraction form
    85,537,217.60/128,305,826.40 = 71,365,457.60/x
  3. Step 3: Cross multiply
    85,537,217.60x = 128,305,826.40 × 71,365,457.60
  4. Step 4: Simplify right side
    85,537,217.60x = 9,156,604,013,782,160
  5. Step 5: Solve for x
    x = 9,156,604,013,782,160/85,537,217.60
  6. Step 6: Final answer
    x = 107,048,186.40

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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.