Home / 143,266,702.72-197,702,281.92-78,075,207.04

Finding the Fourth Proportional to 143,266,702.72, 197,702,281.92 and 78,075,207.04

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Solution

The fourth proportional to 143,266,702.72, 197,702,281.92 and 78,075,207.04 is: 107,740,642.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,266,702.72 : 197,702,281.92 = 78,075,207.04 : x
  2. Step 2: Convert to fraction form
    143,266,702.72/197,702,281.92 = 78,075,207.04/x
  3. Step 3: Cross multiply
    143,266,702.72x = 197,702,281.92 × 78,075,207.04
  4. Step 4: Simplify right side
    143,266,702.72x = 15,435,646,593,184,448
  5. Step 5: Solve for x
    x = 15,435,646,593,184,448/143,266,702.72
  6. Step 6: Final answer
    x = 107,740,642.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.