Home / 145,164,011.40-217,746,017.10-72,604,600.20

Finding the Fourth Proportional to 145,164,011.40, 217,746,017.10 and 72,604,600.20

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Solution

The fourth proportional to 145,164,011.40, 217,746,017.10 and 72,604,600.20 is: 108,906,900.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,164,011.40 : 217,746,017.10 = 72,604,600.20 : x
  2. Step 2: Convert to fraction form
    145,164,011.40/217,746,017.10 = 72,604,600.20/x
  3. Step 3: Cross multiply
    145,164,011.40x = 217,746,017.10 × 72,604,600.20
  4. Step 4: Simplify right side
    145,164,011.40x = 15,809,362,516,687,864
  5. Step 5: Solve for x
    x = 15,809,362,516,687,864/145,164,011.40
  6. Step 6: Final answer
    x = 108,906,900.30

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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.