Home / 127,872,421.20-191,808,631.80-87,057,752.40

Finding the Fourth Proportional to 127,872,421.20, 191,808,631.80 and 87,057,752.40

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Solution

The fourth proportional to 127,872,421.20, 191,808,631.80 and 87,057,752.40 is: 130,586,628.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,872,421.20 : 191,808,631.80 = 87,057,752.40 : x
  2. Step 2: Convert to fraction form
    127,872,421.20/191,808,631.80 = 87,057,752.40/x
  3. Step 3: Cross multiply
    127,872,421.20x = 191,808,631.80 × 87,057,752.40
  4. Step 4: Simplify right side
    127,872,421.20x = 16,698,428,375,427,168
  5. Step 5: Solve for x
    x = 16,698,428,375,427,168/127,872,421.20
  6. Step 6: Final answer
    x = 130,586,628.60

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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.