Home / 102,309,154.40-141,249,199.92-66,579,641.12

Finding the Fourth Proportional to 102,309,154.40, 141,249,199.92 and 66,579,641.12

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Solution

The fourth proportional to 102,309,154.40, 141,249,199.92 and 66,579,641.12 is: 91,920,621.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,309,154.40 : 141,249,199.92 = 66,579,641.12 : x
  2. Step 2: Convert to fraction form
    102,309,154.40/141,249,199.92 = 66,579,641.12/x
  3. Step 3: Cross multiply
    102,309,154.40x = 141,249,199.92 × 66,579,641.12
  4. Step 4: Simplify right side
    102,309,154.40x = 9,404,321,039,160,732
  5. Step 5: Solve for x
    x = 9,404,321,039,160,732/102,309,154.40
  6. Step 6: Final answer
    x = 91,920,621.32

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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.