Home / 85,537,218.60-128,305,827.90-71,365,458.60

Finding the Fourth Proportional to 85,537,218.60, 128,305,827.90 and 71,365,458.60

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Solution

The fourth proportional to 85,537,218.60, 128,305,827.90 and 71,365,458.60 is: 107,048,187.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,537,218.60 : 128,305,827.90 = 71,365,458.60 : x
  2. Step 2: Convert to fraction form
    85,537,218.60/128,305,827.90 = 71,365,458.60/x
  3. Step 3: Cross multiply
    85,537,218.60x = 128,305,827.90 × 71,365,458.60
  4. Step 4: Simplify right side
    85,537,218.60x = 9,156,604,249,136,174
  5. Step 5: Solve for x
    x = 9,156,604,249,136,174/85,537,218.60
  6. Step 6: Final answer
    x = 107,048,187.90

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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.