Home / 86,544,005.20-129,816,007.80-85,946,808.40

Finding the Fourth Proportional to 86,544,005.20, 129,816,007.80 and 85,946,808.40

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Solution

The fourth proportional to 86,544,005.20, 129,816,007.80 and 85,946,808.40 is: 128,920,212.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,544,005.20 : 129,816,007.80 = 85,946,808.40 : x
  2. Step 2: Convert to fraction form
    86,544,005.20/129,816,007.80 = 85,946,808.40/x
  3. Step 3: Cross multiply
    86,544,005.20x = 129,816,007.80 × 85,946,808.40
  4. Step 4: Simplify right side
    86,544,005.20x = 11,157,271,549,639,506
  5. Step 5: Solve for x
    x = 11,157,271,549,639,506/86,544,005.20
  6. Step 6: Final answer
    x = 128,920,212.60

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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.