Home / 137,108,661.90-189,210,312.79-74,384,756.65

Finding the Fourth Proportional to 137,108,661.90, 189,210,312.79 and 74,384,756.65

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Solution

The fourth proportional to 137,108,661.90, 189,210,312.79 and 74,384,756.65 is: 102,651,159.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,108,661.90 : 189,210,312.79 = 74,384,756.65 : x
  2. Step 2: Convert to fraction form
    137,108,661.90/189,210,312.79 = 74,384,756.65/x
  3. Step 3: Cross multiply
    137,108,661.90x = 189,210,312.79 × 74,384,756.65
  4. Step 4: Simplify right side
    137,108,661.90x = 14,074,363,073,136,766
  5. Step 5: Solve for x
    x = 14,074,363,073,136,766/137,108,661.90
  6. Step 6: Final answer
    x = 102,651,159.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.