Home / 140,031,812.40-210,047,718.60-72,007,364.40

Finding the Fourth Proportional to 140,031,812.40, 210,047,718.60 and 72,007,364.40

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Solution

The fourth proportional to 140,031,812.40, 210,047,718.60 and 72,007,364.40 is: 108,011,046.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,031,812.40 : 210,047,718.60 = 72,007,364.40 : x
  2. Step 2: Convert to fraction form
    140,031,812.40/210,047,718.60 = 72,007,364.40/x
  3. Step 3: Cross multiply
    140,031,812.40x = 210,047,718.60 × 72,007,364.40
  4. Step 4: Simplify right side
    140,031,812.40x = 15,124,982,614,618,858
  5. Step 5: Solve for x
    x = 15,124,982,614,618,858/140,031,812.40
  6. Step 6: Final answer
    x = 108,011,046.60

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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.