Home / 143,271,368.10-214,411,040.55-85,804,881.30

Finding the Fourth Proportional to 143,271,368.10, 214,411,040.55 and 85,804,881.30

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Solution

The fourth proportional to 143,271,368.10, 214,411,040.55 and 85,804,881.30 is: 128,410,261.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,271,368.10 : 214,411,040.55 = 85,804,881.30 : x
  2. Step 2: Convert to fraction form
    143,271,368.10/214,411,040.55 = 85,804,881.30/x
  3. Step 3: Cross multiply
    143,271,368.10x = 214,411,040.55 × 85,804,881.30
  4. Step 4: Simplify right side
    143,271,368.10x = 18,397,513,883,802,236
  5. Step 5: Solve for x
    x = 18,397,513,883,802,236/143,271,368.10
  6. Step 6: Final answer
    x = 128,410,261.78

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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.