Home / 153,643,189.38-212,014,783.88-86,658,456.20

Finding the Fourth Proportional to 153,643,189.38, 212,014,783.88 and 86,658,456.20

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Solution

The fourth proportional to 153,643,189.38, 212,014,783.88 and 86,658,456.20 is: 119,581,440.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,643,189.38 : 212,014,783.88 = 86,658,456.20 : x
  2. Step 2: Convert to fraction form
    153,643,189.38/212,014,783.88 = 86,658,456.20/x
  3. Step 3: Cross multiply
    153,643,189.38x = 212,014,783.88 × 86,658,456.20
  4. Step 4: Simplify right side
    153,643,189.38x = 18,372,873,861,124,080
  5. Step 5: Solve for x
    x = 18,372,873,861,124,080/153,643,189.38
  6. Step 6: Final answer
    x = 119,581,440.19

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1.5x scale

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.