Home / 103,343,355.90-155,015,033.85-70,606,590.30

Finding the Fourth Proportional to 103,343,355.90, 155,015,033.85 and 70,606,590.30

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Solution

The fourth proportional to 103,343,355.90, 155,015,033.85 and 70,606,590.30 is: 105,909,885.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,343,355.90 : 155,015,033.85 = 70,606,590.30 : x
  2. Step 2: Convert to fraction form
    103,343,355.90/155,015,033.85 = 70,606,590.30/x
  3. Step 3: Cross multiply
    103,343,355.90x = 155,015,033.85 × 70,606,590.30
  4. Step 4: Simplify right side
    103,343,355.90x = 10,945,082,985,387,580
  5. Step 5: Solve for x
    x = 10,945,082,985,387,580/103,343,355.90
  6. Step 6: Final answer
    x = 105,909,885.45

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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.