Home / 140,342,806.32-210,103,709.46-81,871,699.20

Finding the Fourth Proportional to 140,342,806.32, 210,103,709.46 and 81,871,699.20

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Solution

The fourth proportional to 140,342,806.32, 210,103,709.46 and 81,871,699.20 is: 122,568,075.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,342,806.32 : 210,103,709.46 = 81,871,699.20 : x
  2. Step 2: Convert to fraction form
    140,342,806.32/210,103,709.46 = 81,871,699.20/x
  3. Step 3: Cross multiply
    140,342,806.32x = 210,103,709.46 × 81,871,699.20
  4. Step 4: Simplify right side
    140,342,806.32x = 17,201,547,701,713,316
  5. Step 5: Solve for x
    x = 17,201,547,701,713,316/140,342,806.32
  6. Step 6: Final answer
    x = 122,568,075.65

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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.