Home / 145,542,420.80-218,166,664.80-72,647,086.40

Finding the Fourth Proportional to 145,542,420.80, 218,166,664.80 and 72,647,086.40

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Solution

The fourth proportional to 145,542,420.80, 218,166,664.80 and 72,647,086.40 is: 108,897,271.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,542,420.80 : 218,166,664.80 = 72,647,086.40 : x
  2. Step 2: Convert to fraction form
    145,542,420.80/218,166,664.80 = 72,647,086.40/x
  3. Step 3: Cross multiply
    145,542,420.80x = 218,166,664.80 × 72,647,086.40
  4. Step 4: Simplify right side
    145,542,420.80x = 15,849,172,547,325,440
  5. Step 5: Solve for x
    x = 15,849,172,547,325,440/145,542,420.80
  6. Step 6: Final answer
    x = 108,897,271.74

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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.