Home / 139,968,162.60-209,952,243.90-78,746,159.40

Finding the Fourth Proportional to 139,968,162.60, 209,952,243.90 and 78,746,159.40

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Solution

The fourth proportional to 139,968,162.60, 209,952,243.90 and 78,746,159.40 is: 118,119,239.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,162.60 : 209,952,243.90 = 78,746,159.40 : x
  2. Step 2: Convert to fraction form
    139,968,162.60/209,952,243.90 = 78,746,159.40/x
  3. Step 3: Cross multiply
    139,968,162.60x = 209,952,243.90 × 78,746,159.40
  4. Step 4: Simplify right side
    139,968,162.60x = 16,532,932,864,537,080
  5. Step 5: Solve for x
    x = 16,532,932,864,537,080/139,968,162.60
  6. Step 6: Final answer
    x = 118,119,239.10

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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.