Home / 139,391,998.80-209,087,998.20-124,779,339.60

Finding the Fourth Proportional to 139,391,998.80, 209,087,998.20 and 124,779,339.60

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Solution

The fourth proportional to 139,391,998.80, 209,087,998.20 and 124,779,339.60 is: 187,169,009.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,391,998.80 : 209,087,998.20 = 124,779,339.60 : x
  2. Step 2: Convert to fraction form
    139,391,998.80/209,087,998.20 = 124,779,339.60/x
  3. Step 3: Cross multiply
    139,391,998.80x = 209,087,998.20 × 124,779,339.60
  4. Step 4: Simplify right side
    139,391,998.80x = 26,089,862,333,681,984
  5. Step 5: Solve for x
    x = 26,089,862,333,681,984/139,391,998.80
  6. Step 6: Final answer
    x = 187,169,009.40

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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.