Home / 84,200,430.60-126,300,645.90-71,870,999.40

Finding the Fourth Proportional to 84,200,430.60, 126,300,645.90 and 71,870,999.40

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Solution

The fourth proportional to 84,200,430.60, 126,300,645.90 and 71,870,999.40 is: 107,806,499.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,200,430.60 : 126,300,645.90 = 71,870,999.40 : x
  2. Step 2: Convert to fraction form
    84,200,430.60/126,300,645.90 = 71,870,999.40/x
  3. Step 3: Cross multiply
    84,200,430.60x = 126,300,645.90 × 71,870,999.40
  4. Step 4: Simplify right side
    84,200,430.60x = 9,077,353,645,698,514
  5. Step 5: Solve for x
    x = 9,077,353,645,698,514/84,200,430.60
  6. Step 6: Final answer
    x = 107,806,499.10

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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.