Home / 209,661,681.22-289,354,643.55-126,057,045.22

Finding the Fourth Proportional to 209,661,681.22, 289,354,643.55 and 126,057,045.22

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Solution

The fourth proportional to 209,661,681.22, 289,354,643.55 and 126,057,045.22 is: 173,971,663.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,661,681.22 : 289,354,643.55 = 126,057,045.22 : x
  2. Step 2: Convert to fraction form
    209,661,681.22/289,354,643.55 = 126,057,045.22/x
  3. Step 3: Cross multiply
    209,661,681.22x = 289,354,643.55 × 126,057,045.22
  4. Step 4: Simplify right side
    209,661,681.22x = 36,475,191,385,875,944
  5. Step 5: Solve for x
    x = 36,475,191,385,875,944/209,661,681.22
  6. Step 6: Final answer
    x = 173,971,663.18

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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.