Home / 143,448,088.60-215,331,565.20-78,878,007.10

Finding the Fourth Proportional to 143,448,088.60, 215,331,565.20 and 78,878,007.10

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Solution

The fourth proportional to 143,448,088.60, 215,331,565.20 and 78,878,007.10 is: 118,404,677.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,448,088.60 : 215,331,565.20 = 78,878,007.10 : x
  2. Step 2: Convert to fraction form
    143,448,088.60/215,331,565.20 = 78,878,007.10/x
  3. Step 3: Cross multiply
    143,448,088.60x = 215,331,565.20 × 78,878,007.10
  4. Step 4: Simplify right side
    143,448,088.60x = 16,984,924,728,699,710
  5. Step 5: Solve for x
    x = 16,984,924,728,699,710/143,448,088.60
  6. Step 6: Final answer
    x = 118,404,677.92

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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.