Home / 209,319.89-288,852.72-118,681.98

Finding the Fourth Proportional to 209,319.89, 288,852.72 and 118,681.98

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Solution

The fourth proportional to 209,319.89, 288,852.72 and 118,681.98 is: 163,776.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,319.89 : 288,852.72 = 118,681.98 : x
  2. Step 2: Convert to fraction form
    209,319.89/288,852.72 = 118,681.98/x
  3. Step 3: Cross multiply
    209,319.89x = 288,852.72 × 118,681.98
  4. Step 4: Simplify right side
    209,319.89x = 34,281,613,023.51
  5. Step 5: Solve for x
    x = 34,281,613,023.51/209,319.89
  6. Step 6: Final answer
    x = 163,776.19

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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.