Home / 118,889,711.90-178,334,567.85-86,473,123.10

Finding the Fourth Proportional to 118,889,711.90, 178,334,567.85 and 86,473,123.10

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Solution

The fourth proportional to 118,889,711.90, 178,334,567.85 and 86,473,123.10 is: 129,709,684.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,889,711.90 : 178,334,567.85 = 86,473,123.10 : x
  2. Step 2: Convert to fraction form
    118,889,711.90/178,334,567.85 = 86,473,123.10/x
  3. Step 3: Cross multiply
    118,889,711.90x = 178,334,567.85 × 86,473,123.10
  4. Step 4: Simplify right side
    118,889,711.90x = 15,421,147,038,678,350
  5. Step 5: Solve for x
    x = 15,421,147,038,678,350/118,889,711.90
  6. Step 6: Final answer
    x = 129,709,684.65

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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.