Home / 208,025,710.30-312,038,565.45-105,989,038.30

Finding the Fourth Proportional to 208,025,710.30, 312,038,565.45 and 105,989,038.30

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Solution

The fourth proportional to 208,025,710.30, 312,038,565.45 and 105,989,038.30 is: 158,983,557.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,025,710.30 : 312,038,565.45 = 105,989,038.30 : x
  2. Step 2: Convert to fraction form
    208,025,710.30/312,038,565.45 = 105,989,038.30/x
  3. Step 3: Cross multiply
    208,025,710.30x = 312,038,565.45 × 105,989,038.30
  4. Step 4: Simplify right side
    208,025,710.30x = 33,072,667,464,557,104
  5. Step 5: Solve for x
    x = 33,072,667,464,557,104/208,025,710.30
  6. Step 6: Final answer
    x = 158,983,557.45

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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.