Home / 128,304,030.40-192,418,720.80-70,823,838.40

Finding the Fourth Proportional to 128,304,030.40, 192,418,720.80 and 70,823,838.40

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Solution

The fourth proportional to 128,304,030.40, 192,418,720.80 and 70,823,838.40 is: 106,215,154.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304,030.40 : 192,418,720.80 = 70,823,838.40 : x
  2. Step 2: Convert to fraction form
    128,304,030.40/192,418,720.80 = 70,823,838.40/x
  3. Step 3: Cross multiply
    128,304,030.40x = 192,418,720.80 × 70,823,838.40
  4. Step 4: Simplify right side
    128,304,030.40x = 13,627,832,387,073,920
  5. Step 5: Solve for x
    x = 13,627,832,387,073,920/128,304,030.40
  6. Step 6: Final answer
    x = 106,215,154.31

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1.5x scale

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.