Home / 142,015,001.10-213,022,501.65-90,996,665.10

Finding the Fourth Proportional to 142,015,001.10, 213,022,501.65 and 90,996,665.10

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Solution

The fourth proportional to 142,015,001.10, 213,022,501.65 and 90,996,665.10 is: 136,494,997.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,015,001.10 : 213,022,501.65 = 90,996,665.10 : x
  2. Step 2: Convert to fraction form
    142,015,001.10/213,022,501.65 = 90,996,665.10/x
  3. Step 3: Cross multiply
    142,015,001.10x = 213,022,501.65 × 90,996,665.10
  4. Step 4: Simplify right side
    142,015,001.10x = 19,384,337,241,409,248
  5. Step 5: Solve for x
    x = 19,384,337,241,409,248/142,015,001.10
  6. Step 6: Final answer
    x = 136,494,997.65

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1.5x scale

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.